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Finding the Fourth Proportional to 327.87, 452.39 and 217.17

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Solution

The fourth proportional to 327.87, 452.39 and 217.17 is: 299.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.87 : 452.39 = 217.17 : x
  2. Step 2: Convert to fraction form
    327.87/452.39 = 217.17/x
  3. Step 3: Cross multiply
    327.87x = 452.39 × 217.17
  4. Step 4: Simplify right side
    327.87x = 98,244.45
  5. Step 5: Solve for x
    x = 98,244.45/327.87
  6. Step 6: Final answer
    x = 299.64

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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.