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Finding the Fourth Proportional to 327.87, 452.49 and 215.91

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Solution

The fourth proportional to 327.87, 452.49 and 215.91 is: 297.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.87 : 452.49 = 215.91 : x
  2. Step 2: Convert to fraction form
    327.87/452.49 = 215.91/x
  3. Step 3: Cross multiply
    327.87x = 452.49 × 215.91
  4. Step 4: Simplify right side
    327.87x = 97,697.12
  5. Step 5: Solve for x
    x = 97,697.12/327.87
  6. Step 6: Final answer
    x = 297.98

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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.