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Finding the Fourth Proportional to 327.93, 452.43 and 217.31

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Solution

The fourth proportional to 327.93, 452.43 and 217.31 is: 299.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.93 : 452.43 = 217.31 : x
  2. Step 2: Convert to fraction form
    327.93/452.43 = 217.31/x
  3. Step 3: Cross multiply
    327.93x = 452.43 × 217.31
  4. Step 4: Simplify right side
    327.93x = 98,315.30
  5. Step 5: Solve for x
    x = 98,315.30/327.93
  6. Step 6: Final answer
    x = 299.81

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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.