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Finding the Fourth Proportional to 1,014.40, 1,399.88 and 560.17

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Solution

The fourth proportional to 1,014.40, 1,399.88 and 560.17 is: 773.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,014.40 : 1,399.88 = 560.17 : x
  2. Step 2: Convert to fraction form
    1,014.40/1,399.88 = 560.17/x
  3. Step 3: Cross multiply
    1,014.40x = 1,399.88 × 560.17
  4. Step 4: Simplify right side
    1,014.40x = 784,170.78
  5. Step 5: Solve for x
    x = 784,170.78/1,014.40
  6. Step 6: Final answer
    x = 773.04

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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.