Maharashtra BoardEnglish MediumSTD 9MathsRatio and Proportion1 Mark
Question
$a , b , c$ are in continued proportion. If $a =3$ and $c =27$, then find b .
✓
Answer
$a , b , c$ are in continued proportion. ...[Given]
$\therefore b ^2= ac$
$\therefore b^2=3 \times 27 \ldots[\because a=3$ and $c =27]$
$\therefore b ^2=81$
$\therefore b =9$...[Taking square root of both sides]
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.