What's the same and what's different about solving ratio problem if you know one of the shares or if you know the total?

The question states: x^2 = 7. This means that to find x, you would do the square root of 7. If you don't need an exact answer, it would be square root of 7, but if you need an exact answer, then it would be approximately 2.645, or if rounded to the nearest tenth, 2.6. Hope this helps!