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Finding the Fourth Proportional to 709.25, 1,062.69 and 502.82

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Solution

The fourth proportional to 709.25, 1,062.69 and 502.82 is: 753.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    709.25 : 1,062.69 = 502.82 : x
  2. Step 2: Convert to fraction form
    709.25/1,062.69 = 502.82/x
  3. Step 3: Cross multiply
    709.25x = 1,062.69 × 502.82
  4. Step 4: Simplify right side
    709.25x = 534,341.79
  5. Step 5: Solve for x
    x = 534,341.79/709.25
  6. Step 6: Final answer
    x = 753.39

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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.