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Finding the Fourth Proportional to 708.92, 979.25 and 545.17

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Solution

The fourth proportional to 708.92, 979.25 and 545.17 is: 753.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    708.92 : 979.25 = 545.17 : x
  2. Step 2: Convert to fraction form
    708.92/979.25 = 545.17/x
  3. Step 3: Cross multiply
    708.92x = 979.25 × 545.17
  4. Step 4: Simplify right side
    708.92x = 533,857.72
  5. Step 5: Solve for x
    x = 533,857.72/708.92
  6. Step 6: Final answer
    x = 753.06

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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.