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Finding the Fourth Proportional to 1,002.57, 1,383.62 and 560.46

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Solution

The fourth proportional to 1,002.57, 1,383.62 and 560.46 is: 773.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,002.57 : 1,383.62 = 560.46 : x
  2. Step 2: Convert to fraction form
    1,002.57/1,383.62 = 560.46/x
  3. Step 3: Cross multiply
    1,002.57x = 1,383.62 × 560.46
  4. Step 4: Simplify right side
    1,002.57x = 775,460.86
  5. Step 5: Solve for x
    x = 775,460.86/1,002.57
  6. Step 6: Final answer
    x = 773.47

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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.