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Finding the Fourth Proportional to 1,691.29, 2,530.76 and 998.29

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Solution

The fourth proportional to 1,691.29, 2,530.76 and 998.29 is: 1,493.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,691.29 : 2,530.76 = 998.29 : x
  2. Step 2: Convert to fraction form
    1,691.29/2,530.76 = 998.29/x
  3. Step 3: Cross multiply
    1,691.29x = 2,530.76 × 998.29
  4. Step 4: Simplify right side
    1,691.29x = 2,526,432.40
  5. Step 5: Solve for x
    x = 2,526,432.40/1,691.29
  6. Step 6: Final answer
    x = 1,493.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.