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Finding the Fourth Proportional to 499.38, 748.59 and 316.32

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Solution

The fourth proportional to 499.38, 748.59 and 316.32 is: 474.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.38 : 748.59 = 316.32 : x
  2. Step 2: Convert to fraction form
    499.38/748.59 = 316.32/x
  3. Step 3: Cross multiply
    499.38x = 748.59 × 316.32
  4. Step 4: Simplify right side
    499.38x = 236,793.99
  5. Step 5: Solve for x
    x = 236,793.99/499.38
  6. Step 6: Final answer
    x = 474.18

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