Find the mean proportional between 25 and 81.

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SSC CHSL Exam 2024 Tier-I Official Paper (Held On: 08 Jul, 2024 Shift 3)
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  1. 81
  2. 36
  3. 45
  4. 12

Answer (Detailed Solution Below)

Option 3 : 45
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Detailed Solution

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Given:

The numbers are 25 and 81.

Formula used:

Mean proportional = √(first number × second number)

Calculation:

Mean proportional = √(25 × 81)

⇒ Mean proportional = √2025

⇒ Mean proportional = 45

∴ The mean proportional between 25 and 81 is 45.

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