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Finding the Fourth Proportional to 888.68, 1,332.02 and 425.80

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Solution

The fourth proportional to 888.68, 1,332.02 and 425.80 is: 638.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.68 : 1,332.02 = 425.80 : x
  2. Step 2: Convert to fraction form
    888.68/1,332.02 = 425.80/x
  3. Step 3: Cross multiply
    888.68x = 1,332.02 × 425.80
  4. Step 4: Simplify right side
    888.68x = 567,174.12
  5. Step 5: Solve for x
    x = 567,174.12/888.68
  6. Step 6: Final answer
    x = 638.22

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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.