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Finding the Fourth Proportional to 717.96, 988.02 and 698.52

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Solution

The fourth proportional to 717.96, 988.02 and 698.52 is: 961.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    717.96 : 988.02 = 698.52 : x
  2. Step 2: Convert to fraction form
    717.96/988.02 = 698.52/x
  3. Step 3: Cross multiply
    717.96x = 988.02 × 698.52
  4. Step 4: Simplify right side
    717.96x = 690,151.73
  5. Step 5: Solve for x
    x = 690,151.73/717.96
  6. Step 6: Final answer
    x = 961.27

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.