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Finding the Fourth Proportional to 381.89, 572.85 and 227.88

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Solution

The fourth proportional to 381.89, 572.85 and 227.88 is: 341.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    381.89 : 572.85 = 227.88 : x
  2. Step 2: Convert to fraction form
    381.89/572.85 = 227.88/x
  3. Step 3: Cross multiply
    381.89x = 572.85 × 227.88
  4. Step 4: Simplify right side
    381.89x = 130,541.06
  5. Step 5: Solve for x
    x = 130,541.06/381.89
  6. Step 6: Final answer
    x = 341.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.