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Finding the Fourth Proportional to 609.92, 914.16 and 545.12

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Solution

The fourth proportional to 609.92, 914.16 and 545.12 is: 817.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.92 : 914.16 = 545.12 : x
  2. Step 2: Convert to fraction form
    609.92/914.16 = 545.12/x
  3. Step 3: Cross multiply
    609.92x = 914.16 × 545.12
  4. Step 4: Simplify right side
    609.92x = 498,326.90
  5. Step 5: Solve for x
    x = 498,326.90/609.92
  6. Step 6: Final answer
    x = 817.04

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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.