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Finding the Fourth Proportional to 792.25, 1,092.87 and 477.32

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Solution

The fourth proportional to 792.25, 1,092.87 and 477.32 is: 658.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    792.25 : 1,092.87 = 477.32 : x
  2. Step 2: Convert to fraction form
    792.25/1,092.87 = 477.32/x
  3. Step 3: Cross multiply
    792.25x = 1,092.87 × 477.32
  4. Step 4: Simplify right side
    792.25x = 521,648.71
  5. Step 5: Solve for x
    x = 521,648.71/792.25
  6. Step 6: Final answer
    x = 658.44

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Double scale
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1.5x scale

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.