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Finding the Fourth Proportional to 327.88, 452.27 and 217.31

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Solution

The fourth proportional to 327.88, 452.27 and 217.31 is: 299.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.88 : 452.27 = 217.31 : x
  2. Step 2: Convert to fraction form
    327.88/452.27 = 217.31/x
  3. Step 3: Cross multiply
    327.88x = 452.27 × 217.31
  4. Step 4: Simplify right side
    327.88x = 98,281.71
  5. Step 5: Solve for x
    x = 98,281.71/327.88
  6. Step 6: Final answer
    x = 299.75

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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.