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Finding the Fourth Proportional to 888.71, 1,332.24 and 426.26

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Solution

The fourth proportional to 888.71, 1,332.24 and 426.26 is: 638.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.71 : 1,332.24 = 426.26 : x
  2. Step 2: Convert to fraction form
    888.71/1,332.24 = 426.26/x
  3. Step 3: Cross multiply
    888.71x = 1,332.24 × 426.26
  4. Step 4: Simplify right side
    888.71x = 567,880.62
  5. Step 5: Solve for x
    x = 567,880.62/888.71
  6. Step 6: Final answer
    x = 638.99

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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.