Home / 1,016.20-1,402.42-679.52

Finding the Fourth Proportional to 1,016.20, 1,402.42 and 679.52

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Solution

The fourth proportional to 1,016.20, 1,402.42 and 679.52 is: 937.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,016.20 : 1,402.42 = 679.52 : x
  2. Step 2: Convert to fraction form
    1,016.20/1,402.42 = 679.52/x
  3. Step 3: Cross multiply
    1,016.20x = 1,402.42 × 679.52
  4. Step 4: Simplify right side
    1,016.20x = 952,972.44
  5. Step 5: Solve for x
    x = 952,972.44/1,016.20
  6. Step 6: Final answer
    x = 937.78

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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.