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Finding the Fourth Proportional to 498.29, 747.91 and 238.43

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Solution

The fourth proportional to 498.29, 747.91 and 238.43 is: 357.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    498.29 : 747.91 = 238.43 : x
  2. Step 2: Convert to fraction form
    498.29/747.91 = 238.43/x
  3. Step 3: Cross multiply
    498.29x = 747.91 × 238.43
  4. Step 4: Simplify right side
    498.29x = 178,321.12
  5. Step 5: Solve for x
    x = 178,321.12/498.29
  6. Step 6: Final answer
    x = 357.87

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