Find the mean proportional between 4 and 66. MCQ with Answer and Explanation

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Find the mean proportional between 4 and 66.

A. 70

B. 32

C. 16

D. 19

Answer: Option C

Solution (By JKSSB Mock Tests)

Mean proportional = √(4 × 66) = √(264) = 16.

This question belongs to: Maths Ratio and Proportion

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Practice More Ratio and Proportion Questions

Question #1

If a:b = 4:7 and b:c = 7:4, then a:b:c = ?

A. 8:14:8

B. 4:7:4

C. 3:7:5

D. 4:8:4

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Correct Answer: Option B

Explanation:
Combine ratios: a:b = 4:7, b:c = 7:4 ⇒ a:b:c = 4:7:4.

This question belongs to: Maths Ratio and Proportion

Question #2

If a:b = 8:3 and b:c = 3:6, then a:b:c = ?

A. 8:4:6

B. 7:3:7

C. 16:6:12

D. 8:3:6

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Correct Answer: Option D

Explanation:
Combine ratios: a:b = 8:3, b:c = 3:6 ⇒ a:b:c = 8:3:6.

This question belongs to: Maths Ratio and Proportion

Question #3

Find the mean proportional between 29 and 50.

A. 41

B. 76

C. 38

D. 79

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Correct Answer: Option C

Explanation:
Mean proportional = √(29 × 50) = √(1450) = 38.

This question belongs to: Maths Ratio and Proportion

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