Find the mean proportional between 16 and 72. MCQ with Answer and Explanation

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Find the mean proportional between 16 and 72.

A. 36

B. 66

C. 88

D. 33

Answer: Option D

Solution (By JKSSB Mock Tests)

Mean proportional = √(16 × 72) = √(1152) = 33.

This question belongs to: Maths Ratio and Proportion

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Practice More Ratio and Proportion Questions

Question #1

If a:b = 2:8 and b:c = 8:4, then a:b:c = ?

A. 2:8:4

B. 4:16:8

C. 1:8:5

D. 2:9:4

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Correct Answer: Option A

Explanation:
Combine ratios: a:b = 2:8, b:c = 8:4 ⇒ a:b:c = 2:8:4.

This question belongs to: Maths Ratio and Proportion

Question #2

If a:b = 5:6 and b:c = 6:9, then a:b:c = ?

A. 5:6:9

B. 4:6:10

C. 10:12:18

D. 5:7:9

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Correct Answer: Option A

Explanation:
Combine ratios: a:b = 5:6, b:c = 6:9 ⇒ a:b:c = 5:6:9.

This question belongs to: Maths Ratio and Proportion

Question #3

Two numbers are in the ratio 13:5 and their sum is 464. Find the numbers.

A. 341 and 114

B. 325 and 125

C. 314 and 136

D. 650 and 250

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Correct Answer: Option B

Explanation:
Numbers = 13k and 5k. 13k + 5k = 464 ⇒ k = 25. Thus, numbers are 325 and 125.

This question belongs to: Maths Ratio and Proportion

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