Write the ratio as a fraction with the first term as the numerator and the second term as the denominator
If needed, simplify the fraction by dividing both numerator and denominator by their greatest common factor
If the ratio has more than two terms, convert it into a fraction for each adjacent pair or rewrite it as equivalent fractions
If the ratio includes units, keep the units consistent before converting
If the ratio is in the form a:b, convert it to a/b
If the ratio is in the form a to b, convert it to a/b