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Finding the Fourth Proportional to 363.92, 502.58 and 239.68

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Solution

The fourth proportional to 363.92, 502.58 and 239.68 is: 331.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.92 : 502.58 = 239.68 : x
  2. Step 2: Convert to fraction form
    363.92/502.58 = 239.68/x
  3. Step 3: Cross multiply
    363.92x = 502.58 × 239.68
  4. Step 4: Simplify right side
    363.92x = 120,457.72
  5. Step 5: Solve for x
    x = 120,457.72/363.92
  6. Step 6: Final answer
    x = 331.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.