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Finding the Fourth Proportional to 382.44, 527.72 and 216.66

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Solution

The fourth proportional to 382.44, 527.72 and 216.66 is: 298.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.44 : 527.72 = 216.66 : x
  2. Step 2: Convert to fraction form
    382.44/527.72 = 216.66/x
  3. Step 3: Cross multiply
    382.44x = 527.72 × 216.66
  4. Step 4: Simplify right side
    382.44x = 114,335.82
  5. Step 5: Solve for x
    x = 114,335.82/382.44
  6. Step 6: Final answer
    x = 298.96

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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.