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Finding the Fourth Proportional to 717.03, 984.15 and 686.97

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Solution

The fourth proportional to 717.03, 984.15 and 686.97 is: 942.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    717.03 : 984.15 = 686.97 : x
  2. Step 2: Convert to fraction form
    717.03/984.15 = 686.97/x
  3. Step 3: Cross multiply
    717.03x = 984.15 × 686.97
  4. Step 4: Simplify right side
    717.03x = 676,081.53
  5. Step 5: Solve for x
    x = 676,081.53/717.03
  6. Step 6: Final answer
    x = 942.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.