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Finding the Fourth Proportional to 382.11, 527.28 and 216.37

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Solution

The fourth proportional to 382.11, 527.28 and 216.37 is: 298.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.11 : 527.28 = 216.37 : x
  2. Step 2: Convert to fraction form
    382.11/527.28 = 216.37/x
  3. Step 3: Cross multiply
    382.11x = 527.28 × 216.37
  4. Step 4: Simplify right side
    382.11x = 114,087.57
  5. Step 5: Solve for x
    x = 114,087.57/382.11
  6. Step 6: Final answer
    x = 298.58

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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.