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Finding the Fourth Proportional to 549.08, 758.47 and 439.34

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Solution

The fourth proportional to 549.08, 758.47 and 439.34 is: 606.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.08 : 758.47 = 439.34 : x
  2. Step 2: Convert to fraction form
    549.08/758.47 = 439.34/x
  3. Step 3: Cross multiply
    549.08x = 758.47 × 439.34
  4. Step 4: Simplify right side
    549.08x = 333,226.21
  5. Step 5: Solve for x
    x = 333,226.21/549.08
  6. Step 6: Final answer
    x = 606.88

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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.