You can set up a proportion like
"scale for inches" : "scale for feet" = "actual inches" : "actual feet"
Plugging the numbers, you have
[tex]2\div 55 = 22\div x[/tex]
Now, you can either solve this proportion by x, or simply realize that you can start from the "2 inches = 55 feet" scale, and multiply both sides by 11 to get that 22 inches are
[tex]55\cdot 11 = 605[/tex] feet.
