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Finding the Fourth Proportional to 588.92, 810.92 and 478.20

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Solution

The fourth proportional to 588.92, 810.92 and 478.20 is: 658.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    588.92 : 810.92 = 478.20 : x
  2. Step 2: Convert to fraction form
    588.92/810.92 = 478.20/x
  3. Step 3: Cross multiply
    588.92x = 810.92 × 478.20
  4. Step 4: Simplify right side
    588.92x = 387,779.55
  5. Step 5: Solve for x
    x = 387,779.55/588.92
  6. Step 6: Final answer
    x = 658.46

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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.