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Finding the Fourth Proportional to 548.83, 758.13 and 439.09

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Solution

The fourth proportional to 548.83, 758.13 and 439.09 is: 606.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.83 : 758.13 = 439.09 : x
  2. Step 2: Convert to fraction form
    548.83/758.13 = 439.09/x
  3. Step 3: Cross multiply
    548.83x = 758.13 × 439.09
  4. Step 4: Simplify right side
    548.83x = 332,885.11
  5. Step 5: Solve for x
    x = 332,885.11/548.83
  6. Step 6: Final answer
    x = 606.54

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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.