Finding the Fourth Proportional to 498.47, 747.71 and 151.81

Step by Step Solution

1. Step 1: Write the proportion equation
   498.47 : 747.71 = 151.81 : x
2. Step 2: Convert to fraction form
   498.47/747.71 = 151.81/x
3. Step 3: Cross multiply
   498.47x = 747.71 × 151.81
4. Step 4: Simplify right side
   498.47x = 113,508.37
5. Step 5: Solve for x
   x = 113,508.37/498.47
6. Step 6: Final answer
   x = 227.71