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Finding the Fourth Proportional to 717.92, 992.01 and 560.95

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Solution

The fourth proportional to 717.92, 992.01 and 560.95 is: 775.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    717.92 : 992.01 = 560.95 : x
  2. Step 2: Convert to fraction form
    717.92/992.01 = 560.95/x
  3. Step 3: Cross multiply
    717.92x = 992.01 × 560.95
  4. Step 4: Simplify right side
    717.92x = 556,468.01
  5. Step 5: Solve for x
    x = 556,468.01/717.92
  6. Step 6: Final answer
    x = 775.11

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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.