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Finding the Fourth Proportional to 1,082.72, 1,494.09 and 616.97

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Solution

The fourth proportional to 1,082.72, 1,494.09 and 616.97 is: 851.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,082.72 : 1,494.09 = 616.97 : x
  2. Step 2: Convert to fraction form
    1,082.72/1,494.09 = 616.97/x
  3. Step 3: Cross multiply
    1,082.72x = 1,494.09 × 616.97
  4. Step 4: Simplify right side
    1,082.72x = 921,801.24
  5. Step 5: Solve for x
    x = 921,801.24/1,082.72
  6. Step 6: Final answer
    x = 851.38

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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.