Just a simple proportion problem. We could set it up in several ways. Here is my approach:
(4 hrs) / (276 miles) = (x hours) / (552 miles)
Now, cross-multiplying, we get:
(4) * (552) = (x) * (276)
Divide both sides by 276 to find "x." Note that the answer will be in hours.
Not too bad , huh??
+4 
