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Finding the Fourth Proportional to 844.50, 1,267.31 and 324.93

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Solution

The fourth proportional to 844.50, 1,267.31 and 324.93 is: 487.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.50 : 1,267.31 = 324.93 : x
  2. Step 2: Convert to fraction form
    844.50/1,267.31 = 324.93/x
  3. Step 3: Cross multiply
    844.50x = 1,267.31 × 324.93
  4. Step 4: Simplify right side
    844.50x = 411,787.85
  5. Step 5: Solve for x
    x = 411,787.85/844.50
  6. Step 6: Final answer
    x = 487.61

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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.