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Finding the Fourth Proportional to 826.32, 1,239.25 and 363.98

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Solution

The fourth proportional to 826.32, 1,239.25 and 363.98 is: 545.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    826.32 : 1,239.25 = 363.98 : x
  2. Step 2: Convert to fraction form
    826.32/1,239.25 = 363.98/x
  3. Step 3: Cross multiply
    826.32x = 1,239.25 × 363.98
  4. Step 4: Simplify right side
    826.32x = 451,062.22
  5. Step 5: Solve for x
    x = 451,062.22/826.32
  6. Step 6: Final answer
    x = 545.87

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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.