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Finding the Fourth Proportional to 325.89, 489.29 and 249.80

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Solution

The fourth proportional to 325.89, 489.29 and 249.80 is: 375.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.89 : 489.29 = 249.80 : x
  2. Step 2: Convert to fraction form
    325.89/489.29 = 249.80/x
  3. Step 3: Cross multiply
    325.89x = 489.29 × 249.80
  4. Step 4: Simplify right side
    325.89x = 122,220.95
  5. Step 5: Solve for x
    x = 122,220.95/325.89
  6. Step 6: Final answer
    x = 375.04

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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.