Finding the Fourth Proportional to 253.72, 350.00 and 155.50

Step by Step Solution

1. Step 1: Write the proportion equation
   253.72 : 350.00 = 155.50 : x
2. Step 2: Convert to fraction form
   253.72/350.00 = 155.50/x
3. Step 3: Cross multiply
   253.72x = 350.00 × 155.50
4. Step 4: Simplify right side
   253.72x = 54,422.47
5. Step 5: Solve for x
   x = 54,422.47/253.72
6. Step 6: Final answer
   x = 214.50