Correct option is A
Given:
Fourth proportional to 4, a, and 16a is 81
That is,
Concept Used:
If a : b = c : d, then d is the fourth proportional to a, b, c
Solution:
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Question
The fourth proportional to 4, a and 16a is 81. Find the value of a².
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- 1)
Find the fourth proportional to 20, 24 and 30.
- 2)
Find the fourth proportional of 4, 6 and 5.
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The fourth proportional to 17, 87 and 119 is:
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LCM and HCF of two numbers are 198 and 33 respectively. If one of the numbers is 99, then find the other number.
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The fourth proportional to 16, a and 9a is 324. What is the value of a?
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The fourth proportional to 2.5, 9.6 and 75 is:
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The fourth proportional to 4, a and 16a is 81. Find the value of a².
- 8)Which of the following numbers will come in the place of x in the given equation?
0.3 : 4.8 : : 0.2 : x - 9)Find the fourth proportional of 4, 12, and 20.
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The fourth proportional of a, c and bc is d. The fourth proportional of bc²/a, ad/c and c is ______.
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Similar Questions
- 1)
Find the fourth proportional to 20, 24 and 30.
- 2)
Find the fourth proportional of 4, 6 and 5.
- 3)
The fourth proportional to 17, 87 and 119 is:
- 4)
LCM and HCF of two numbers are 198 and 33 respectively. If one of the numbers is 99, then find the other number.
- 5)
The fourth proportional to 16, a and 9a is 324. What is the value of a?
- 6)
The fourth proportional to 2.5, 9.6 and 75 is:
- 7)
The fourth proportional to 4, a and 16a is 81. Find the value of a².
- 8)Which of the following numbers will come in the place of x in the given equation?
0.3 : 4.8 : : 0.2 : x - 9)Find the fourth proportional of 4, 12, and 20.
- 10)
The fourth proportional of a, c and bc is d. The fourth proportional of bc²/a, ad/c and c is ______.
