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Finding the Fourth Proportional to 550.48, 759.63 and 329.55

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Solution

The fourth proportional to 550.48, 759.63 and 329.55 is: 454.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.48 : 759.63 = 329.55 : x
  2. Step 2: Convert to fraction form
    550.48/759.63 = 329.55/x
  3. Step 3: Cross multiply
    550.48x = 759.63 × 329.55
  4. Step 4: Simplify right side
    550.48x = 250,330.62
  5. Step 5: Solve for x
    x = 250,330.62/550.48
  6. Step 6: Final answer
    x = 454.75

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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.