A ratio may be written as a:b or, in fraction form, a/b.
To obtain the ratio in fraction, divide the longest side by the shortest side. Thus, we get the following.
[tex]\frac{1.2}{0.8}[/tex]To determine the lowest term, eliminate the decimal point by multiplying the numerator and the denominator by 10.
[tex]\frac{1.2}{0.8}\cdot\frac{10}{10}=\frac{12}{8}[/tex]Divide the numerator and the denominator by the greatest common factor (GCF) of 12 and 8, which is 4.
[tex]\frac{12\div4}{8\div4}=\frac{3}{2}[/tex]Therefore, the ratio in fraction form is
[tex]\frac{3}{2}[/tex]