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Finding the Fourth Proportional to 1,167.46, 1,610.45 and 725.27

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Solution

The fourth proportional to 1,167.46, 1,610.45 and 725.27 is: 1,000.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,167.46 : 1,610.45 = 725.27 : x
  2. Step 2: Convert to fraction form
    1,167.46/1,610.45 = 725.27/x
  3. Step 3: Cross multiply
    1,167.46x = 1,610.45 × 725.27
  4. Step 4: Simplify right side
    1,167.46x = 1,168,002.11
  5. Step 5: Solve for x
    x = 1,168,002.11/1,167.46
  6. Step 6: Final answer
    x = 1,000.47

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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.