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Finding the Fourth Proportional to 549.57, 757.56 and 438.87

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Solution

The fourth proportional to 549.57, 757.56 and 438.87 is: 604.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.57 : 757.56 = 438.87 : x
  2. Step 2: Convert to fraction form
    549.57/757.56 = 438.87/x
  3. Step 3: Cross multiply
    549.57x = 757.56 × 438.87
  4. Step 4: Simplify right side
    549.57x = 332,470.36
  5. Step 5: Solve for x
    x = 332,470.36/549.57
  6. Step 6: Final answer
    x = 604.96

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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.