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Finding the Fourth Proportional to 550.39, 759.13 and 375.79

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Solution

The fourth proportional to 550.39, 759.13 and 375.79 is: 518.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.39 : 759.13 = 375.79 : x
  2. Step 2: Convert to fraction form
    550.39/759.13 = 375.79/x
  3. Step 3: Cross multiply
    550.39x = 759.13 × 375.79
  4. Step 4: Simplify right side
    550.39x = 285,273.46
  5. Step 5: Solve for x
    x = 285,273.46/550.39
  6. Step 6: Final answer
    x = 518.31

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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.