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Finding the Fourth Proportional to 550.47, 759.39 and 326.25

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Solution

The fourth proportional to 550.47, 759.39 and 326.25 is: 450.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.47 : 759.39 = 326.25 : x
  2. Step 2: Convert to fraction form
    550.47/759.39 = 326.25/x
  3. Step 3: Cross multiply
    550.47x = 759.39 × 326.25
  4. Step 4: Simplify right side
    550.47x = 247,750.99
  5. Step 5: Solve for x
    x = 247,750.99/550.47
  6. Step 6: Final answer
    x = 450.07

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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.