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Finding the Fourth Proportional to 550.27, 758.85 and 426.20

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Solution

The fourth proportional to 550.27, 758.85 and 426.20 is: 587.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.27 : 758.85 = 426.20 : x
  2. Step 2: Convert to fraction form
    550.27/758.85 = 426.20/x
  3. Step 3: Cross multiply
    550.27x = 758.85 × 426.20
  4. Step 4: Simplify right side
    550.27x = 323,421.87
  5. Step 5: Solve for x
    x = 323,421.87/550.27
  6. Step 6: Final answer
    x = 587.75

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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.