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Finding the Fourth Proportional to 329.13, 453.39 and 255.32

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Solution

The fourth proportional to 329.13, 453.39 and 255.32 is: 351.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.13 : 453.39 = 255.32 : x
  2. Step 2: Convert to fraction form
    329.13/453.39 = 255.32/x
  3. Step 3: Cross multiply
    329.13x = 453.39 × 255.32
  4. Step 4: Simplify right side
    329.13x = 115,757.27
  5. Step 5: Solve for x
    x = 115,757.27/329.13
  6. Step 6: Final answer
    x = 351.71

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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.