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Finding the Fourth Proportional to 327.67, 451.85 and 215.66

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Solution

The fourth proportional to 327.67, 451.85 and 215.66 is: 297.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.67 : 451.85 = 215.66 : x
  2. Step 2: Convert to fraction form
    327.67/451.85 = 215.66/x
  3. Step 3: Cross multiply
    327.67x = 451.85 × 215.66
  4. Step 4: Simplify right side
    327.67x = 97,446.02
  5. Step 5: Solve for x
    x = 97,446.02/327.67
  6. Step 6: Final answer
    x = 297.39

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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.