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Finding the Fourth Proportional to 382.55, 527.94 and 216.77

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Solution

The fourth proportional to 382.55, 527.94 and 216.77 is: 299.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.55 : 527.94 = 216.77 : x
  2. Step 2: Convert to fraction form
    382.55/527.94 = 216.77/x
  3. Step 3: Cross multiply
    382.55x = 527.94 × 216.77
  4. Step 4: Simplify right side
    382.55x = 114,437.83
  5. Step 5: Solve for x
    x = 114,437.83/382.55
  6. Step 6: Final answer
    x = 299.15

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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.