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Finding the Fourth Proportional to 550.75, 759.75 and 326.55

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Solution

The fourth proportional to 550.75, 759.75 and 326.55 is: 450.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.75 : 759.75 = 326.55 : x
  2. Step 2: Convert to fraction form
    550.75/759.75 = 326.55/x
  3. Step 3: Cross multiply
    550.75x = 759.75 × 326.55
  4. Step 4: Simplify right side
    550.75x = 248,097.99
  5. Step 5: Solve for x
    x = 248,097.99/550.75
  6. Step 6: Final answer
    x = 450.47

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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.