Posted by confused by adverbs and adjectives on .
7/4 = 3/a (Find the value of a )
T5/4 = 3/2 (Find the value of T)
x/9 = 0.24/3 (Find the value of x )

Math 
Ms. Sue,
These are proportions.
Cross multiply and solve for the unknown value.
7/4 = 3/a
7a = 12
a = 12/7 = 1 5/7