Find the mean proportional between 28 and 49. MCQ with Answer and Explanation

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Find the mean proportional between 28 and 49.

A. 40

B. 74

C. 77

D. 37

Answer: Option D

Solution (By JKSSB Mock Tests)

Mean proportional = √(28 × 49) = √(1372) = 37.

This question belongs to: Maths Ratio and Proportion

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Practice More Ratio and Proportion Questions

Question #1

If a:b = 5:4 and b:c = 4:4, then a:b:c = ?

A. 5:4:4

B. 4:4:5

C. 10:8:8

D. 5:5:4

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Correct Answer: Option A

Explanation:
Combine ratios: a:b = 5:4, b:c = 4:4 ⇒ a:b:c = 5:4:4.

This question belongs to: Maths Ratio and Proportion

Question #2

If a:b = 8:4 and b:c = 4:11, then a:b:c = ?

A. 8:5:11

B. 8:4:11

C. 7:4:12

D. 16:8:22

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Correct Answer: Option B

Explanation:
Combine ratios: a:b = 8:4, b:c = 4:11 ⇒ a:b:c = 8:4:11.

This question belongs to: Maths Ratio and Proportion

Question #3

If a:b = 2:4 and b:c = 4:10, then a:b:c = ?

A. 4:8:20

B. 2:4:10

C. 2:5:10

D. 1:4:11

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Correct Answer: Option B

Explanation:
Combine ratios: a:b = 2:4, b:c = 4:10 ⇒ a:b:c = 2:4:10.

This question belongs to: Maths Ratio and Proportion

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