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Finding the Fourth Proportional to 327.95, 452.82 and 287.97

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Solution

The fourth proportional to 327.95, 452.82 and 287.97 is: 397.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.95 : 452.82 = 287.97 : x
  2. Step 2: Convert to fraction form
    327.95/452.82 = 287.97/x
  3. Step 3: Cross multiply
    327.95x = 452.82 × 287.97
  4. Step 4: Simplify right side
    327.95x = 130,398.07
  5. Step 5: Solve for x
    x = 130,398.07/327.95
  6. Step 6: Final answer
    x = 397.62

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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.