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Finding the Fourth Proportional to 382.43, 527.72 and 216.60

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Solution

The fourth proportional to 382.43, 527.72 and 216.60 is: 298.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.43 : 527.72 = 216.60 : x
  2. Step 2: Convert to fraction form
    382.43/527.72 = 216.60/x
  3. Step 3: Cross multiply
    382.43x = 527.72 × 216.60
  4. Step 4: Simplify right side
    382.43x = 114,303.07
  5. Step 5: Solve for x
    x = 114,303.07/382.43
  6. Step 6: Final answer
    x = 298.89

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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.