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Finding the Fourth Proportional to 675.92, 932.15 and 426.80

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Solution

The fourth proportional to 675.92, 932.15 and 426.80 is: 588.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.92 : 932.15 = 426.80 : x
  2. Step 2: Convert to fraction form
    675.92/932.15 = 426.80/x
  3. Step 3: Cross multiply
    675.92x = 932.15 × 426.80
  4. Step 4: Simplify right side
    675.92x = 397,845.02
  5. Step 5: Solve for x
    x = 397,845.02/675.92
  6. Step 6: Final answer
    x = 588.60

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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.