Finding the Fourth Proportional to 498.22, 747.31 and 151.55

Step by Step Solution

1. Step 1: Write the proportion equation
   498.22 : 747.31 = 151.55 : x
2. Step 2: Convert to fraction form
   498.22/747.31 = 151.55/x
3. Step 3: Cross multiply
   498.22x = 747.31 × 151.55
4. Step 4: Simplify right side
   498.22x = 113,254.83
5. Step 5: Solve for x
   x = 113,254.83/498.22
6. Step 6: Final answer
   x = 227.32