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Finding the Fourth Proportional to 549.38, 823.34 and 225

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Solution

The fourth proportional to 549.38, 823.34 and 225 is: 337.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.38 : 823.34 = 225 : x
  2. Step 2: Convert to fraction form
    549.38/823.34 = 225/x
  3. Step 3: Cross multiply
    549.38x = 823.34 × 225
  4. Step 4: Simplify right side
    549.38x = 185,251.50
  5. Step 5: Solve for x
    x = 185,251.50/549.38
  6. Step 6: Final answer
    x = 337.20

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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.