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Finding the Fourth Proportional to 549.56, 824.64 and 225.15

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Solution

The fourth proportional to 549.56, 824.64 and 225.15 is: 337.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.56 : 824.64 = 225.15 : x
  2. Step 2: Convert to fraction form
    549.56/824.64 = 225.15/x
  3. Step 3: Cross multiply
    549.56x = 824.64 × 225.15
  4. Step 4: Simplify right side
    549.56x = 185,667.70
  5. Step 5: Solve for x
    x = 185,667.70/549.56
  6. Step 6: Final answer
    x = 337.85

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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.