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Finding the Fourth Proportional to 549.02, 758.18 and 469.88

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Solution

The fourth proportional to 549.02, 758.18 and 469.88 is: 648.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.02 : 758.18 = 469.88 : x
  2. Step 2: Convert to fraction form
    549.02/758.18 = 469.88/x
  3. Step 3: Cross multiply
    549.02x = 758.18 × 469.88
  4. Step 4: Simplify right side
    549.02x = 356,253.62
  5. Step 5: Solve for x
    x = 356,253.62/549.02
  6. Step 6: Final answer
    x = 648.89

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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.