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Question : The mean proportional between 0.03 and 0.0003 is:

Option 1: 0.0003

Option 2: 0.0013

Option 3: 0.003

Option 4: 0.033


Team Careers360 23rd Jan, 2024
Answer (1)
Team Careers360 25th Jan, 2024

Correct Answer: 0.003


Solution : Let $x$ be the mean proportional value.
a = 0.03, b = 0.0003
According to the question,
$\frac{a}{x} =\frac{x}{b}$
⇒ $\frac{0.03}{x} = \frac{x}{0.0003}$
⇒ $x^2 = 0.03 \times 0.0003$
$\therefore x = 0.003$
Hence, the correct answer is 0.003.

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