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Finding the Fourth Proportional to 807.92, 1,114.32 and 545.84

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Solution

The fourth proportional to 807.92, 1,114.32 and 545.84 is: 752.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    807.92 : 1,114.32 = 545.84 : x
  2. Step 2: Convert to fraction form
    807.92/1,114.32 = 545.84/x
  3. Step 3: Cross multiply
    807.92x = 1,114.32 × 545.84
  4. Step 4: Simplify right side
    807.92x = 608,240.43
  5. Step 5: Solve for x
    x = 608,240.43/807.92
  6. Step 6: Final answer
    x = 752.85

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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.