Find the ratio of mean proportion of 2 and 98 to the 4th proportion of 3, 4 and 9.
Answer & explanation
Correct answer: option 1
Mean proportion ⇒ \(\sqrt{2×98}=\sqrt{196}\) = 14
Fourth proportion ⇒ \(\frac{3 }{4}\) = \(\frac{9 }{x}\) ⇒ x = 12
Req. Ratio = 14 : 12 = 7 : 6