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Finding the Fourth Proportional to 550.16, 758.85 and 418.94

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Solution

The fourth proportional to 550.16, 758.85 and 418.94 is: 577.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.16 : 758.85 = 418.94 : x
  2. Step 2: Convert to fraction form
    550.16/758.85 = 418.94/x
  3. Step 3: Cross multiply
    550.16x = 758.85 × 418.94
  4. Step 4: Simplify right side
    550.16x = 317,912.62
  5. Step 5: Solve for x
    x = 317,912.62/550.16
  6. Step 6: Final answer
    x = 577.85

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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.