Finding the Fourth Proportional to 498.35, 747.59 and 151.72

Step by Step Solution

1. Step 1: Write the proportion equation
   498.35 : 747.59 = 151.72 : x
2. Step 2: Convert to fraction form
   498.35/747.59 = 151.72/x
3. Step 3: Cross multiply
   498.35x = 747.59 × 151.72
4. Step 4: Simplify right side
   498.35x = 113,424.35
5. Step 5: Solve for x
   x = 113,424.35/498.35
6. Step 6: Final answer
   x = 227.60