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Finding the Fourth Proportional to 596.18, 821.94 and 489.44

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Solution

The fourth proportional to 596.18, 821.94 and 489.44 is: 674.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    596.18 : 821.94 = 489.44 : x
  2. Step 2: Convert to fraction form
    596.18/821.94 = 489.44/x
  3. Step 3: Cross multiply
    596.18x = 821.94 × 489.44
  4. Step 4: Simplify right side
    596.18x = 402,292.37
  5. Step 5: Solve for x
    x = 402,292.37/596.18
  6. Step 6: Final answer
    x = 674.78

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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.