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Finding the Fourth Proportional to 1,002.17, 1,382.97 and 560.12

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Solution

The fourth proportional to 1,002.17, 1,382.97 and 560.12 is: 772.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,002.17 : 1,382.97 = 560.12 : x
  2. Step 2: Convert to fraction form
    1,002.17/1,382.97 = 560.12/x
  3. Step 3: Cross multiply
    1,002.17x = 1,382.97 × 560.12
  4. Step 4: Simplify right side
    1,002.17x = 774,624.34
  5. Step 5: Solve for x
    x = 774,624.34/1,002.17
  6. Step 6: Final answer
    x = 772.95

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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.