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Finding the Fourth Proportional to 550.57, 758.94 and 439.87

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Solution

The fourth proportional to 550.57, 758.94 and 439.87 is: 606.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.57 : 758.94 = 439.87 : x
  2. Step 2: Convert to fraction form
    550.57/758.94 = 439.87/x
  3. Step 3: Cross multiply
    550.57x = 758.94 × 439.87
  4. Step 4: Simplify right side
    550.57x = 333,834.94
  5. Step 5: Solve for x
    x = 333,834.94/550.57
  6. Step 6: Final answer
    x = 606.34

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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.