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Finding the Fourth Proportional to 499.28, 748.31 and 225.30

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Solution

The fourth proportional to 499.28, 748.31 and 225.30 is: 337.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.28 : 748.31 = 225.30 : x
  2. Step 2: Convert to fraction form
    499.28/748.31 = 225.30/x
  3. Step 3: Cross multiply
    499.28x = 748.31 × 225.30
  4. Step 4: Simplify right side
    499.28x = 168,594.24
  5. Step 5: Solve for x
    x = 168,594.24/499.28
  6. Step 6: Final answer
    x = 337.67

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