Explanation
So we have a ratio of 3 feet to 63 inches and we must write it as a fraction. The first thing to do is convert feet to inches so we have both parts in the same unit. According to the table there are 12 inches in 1 foot so 3 feet is equivalent to:
[tex]3\text{ ft}=3\cdot12\text{ in}=36\text{ in}[/tex]
So the ratio is 36 inches to 63 inches. In order to express it as a fraction we must take the left part and divide it by the right part:
[tex]\frac{36}{63}=\frac{9\cdot4}{9\cdot7}=\frac{4}{7}[/tex]
Answer
Then the answer is 4/7.