If 5 and 10 are given, what is the third proportional to these numbers?
20
The third proportional \(x\) to two numbers \(a\) and \(b\) satisfies \(a : b = b : x\).
So \(x = \frac{b^2}{a}\).
Here \(a = 5\) and \(b = 10\), so \(x = \frac{10^2}{5} = \frac{100}{5} = 20\).
Hence, the third proportional is 20.
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Important Questions from Third Proportional
Find the third proportional to 16 and 24.
What is the third proportional to the numbers 9 and 45?
Find the third proportional to 6 and 12.
Find the 3 rd proportional to 9 and 21.
The third proportional to 0.9 and 0.3 is:
