The ratio is used for comparing two quantities of the sane kind.
The ratio formula for two numbers says a and b is given by a:b or a/b. When two or more such ratios are equal, they are said to be in proportion.
The concept of ratio and proportion is majorly based on ratios and fractions.
Solution:
Given ratio, $17/45:51?27$
The reciprocal of the given ratio is $45/17:51/27$
$=\left( 45/17 \right)\times \left( 51/27 \right)$
$=\left( 45/1 \right)\times \left( 3/27 \right)$
$=\left( 45/1 \right)\times \left( 1/9 \right)$
$=5/1$ Therefore, reciprocal of the ratio is $5:1$
Solution:
Given ratio, $1/45:1/54$
The reciprocal of the given ratio is $45/1:54/1$
$=45/1:54/1$
$=45:54$
$=45/54$
$=5/6$
Therefore, reciprocal of the ratio is $5:6$