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Finding the Fourth Proportional to 789.29, 1,184.31 and 496.73

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Solution

The fourth proportional to 789.29, 1,184.31 and 496.73 is: 745.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    789.29 : 1,184.31 = 496.73 : x
  2. Step 2: Convert to fraction form
    789.29/1,184.31 = 496.73/x
  3. Step 3: Cross multiply
    789.29x = 1,184.31 × 496.73
  4. Step 4: Simplify right side
    789.29x = 588,276.38
  5. Step 5: Solve for x
    x = 588,276.38/789.29
  6. Step 6: Final answer
    x = 745.32

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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.