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Finding the Fourth Proportional to 549.57, 758.28 and 353.36

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Solution

The fourth proportional to 549.57, 758.28 and 353.36 is: 487.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.57 : 758.28 = 353.36 : x
  2. Step 2: Convert to fraction form
    549.57/758.28 = 353.36/x
  3. Step 3: Cross multiply
    549.57x = 758.28 × 353.36
  4. Step 4: Simplify right side
    549.57x = 267,942.03
  5. Step 5: Solve for x
    x = 267,942.03/549.57
  6. Step 6: Final answer
    x = 487.55

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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.