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Finding the Fourth Proportional to 327.82, 452.49 and 211.38

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Solution

The fourth proportional to 327.82, 452.49 and 211.38 is: 291.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.82 : 452.49 = 211.38 : x
  2. Step 2: Convert to fraction form
    327.82/452.49 = 211.38/x
  3. Step 3: Cross multiply
    327.82x = 452.49 × 211.38
  4. Step 4: Simplify right side
    327.82x = 95,644.02
  5. Step 5: Solve for x
    x = 95,644.02/327.82
  6. Step 6: Final answer
    x = 291.76

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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.