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Finding the Fourth Proportional to 381.43, 572.20 and 176.05

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Solution

The fourth proportional to 381.43, 572.20 and 176.05 is: 264.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    381.43 : 572.20 = 176.05 : x
  2. Step 2: Convert to fraction form
    381.43/572.20 = 176.05/x
  3. Step 3: Cross multiply
    381.43x = 572.20 × 176.05
  4. Step 4: Simplify right side
    381.43x = 100,732.87
  5. Step 5: Solve for x
    x = 100,732.87/381.43
  6. Step 6: Final answer
    x = 264.09

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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.