Finding the Fourth Proportional to 433.72, 649.72 and 227.98

Step by Step Solution

1. Step 1: Write the proportion equation
   433.72 : 649.72 = 227.98 : x
2. Step 2: Convert to fraction form
   433.72/649.72 = 227.98/x
3. Step 3: Cross multiply
   433.72x = 649.72 × 227.98
4. Step 4: Simplify right side
   433.72x = 148,123.17
5. Step 5: Solve for x
   x = 148,123.17/433.72
6. Step 6: Final answer
   x = 341.52