Find a third proportional to the numbers 2 and 3.
Answer & explanation
Correct answer: option 2
⇒ a : b :: b : c
Third proportion (c) = \(\frac{b^2}{a}\)
Here,
a = 2, b = 3,
∴ c = \(\frac{b^2}{a}\) = \(\frac{9}{2}\) = 4.5
Find a third proportional to the numbers 2 and 3.
Correct answer: option 2
⇒ a : b :: b : c
Third proportion (c) = \(\frac{b^2}{a}\)
Here,
a = 2, b = 3,
∴ c = \(\frac{b^2}{a}\) = \(\frac{9}{2}\) = 4.5