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Finding the Fourth Proportional to 549.37, 758.13 and 353.21

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Solution

The fourth proportional to 549.37, 758.13 and 353.21 is: 487.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.37 : 758.13 = 353.21 : x
  2. Step 2: Convert to fraction form
    549.37/758.13 = 353.21/x
  3. Step 3: Cross multiply
    549.37x = 758.13 × 353.21
  4. Step 4: Simplify right side
    549.37x = 267,779.10
  5. Step 5: Solve for x
    x = 267,779.10/549.37
  6. Step 6: Final answer
    x = 487.43

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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.