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Finding the Fourth Proportional to 888.57, 1,332.88 and 239.31

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Solution

The fourth proportional to 888.57, 1,332.88 and 239.31 is: 358.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.57 : 1,332.88 = 239.31 : x
  2. Step 2: Convert to fraction form
    888.57/1,332.88 = 239.31/x
  3. Step 3: Cross multiply
    888.57x = 1,332.88 × 239.31
  4. Step 4: Simplify right side
    888.57x = 318,970.91
  5. Step 5: Solve for x
    x = 318,970.91/888.57
  6. Step 6: Final answer
    x = 358.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.