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Finding the Fourth Proportional to 381.12, 571.22 and 175.41

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Solution

The fourth proportional to 381.12, 571.22 and 175.41 is: 262.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    381.12 : 571.22 = 175.41 : x
  2. Step 2: Convert to fraction form
    381.12/571.22 = 175.41/x
  3. Step 3: Cross multiply
    381.12x = 571.22 × 175.41
  4. Step 4: Simplify right side
    381.12x = 100,194.84
  5. Step 5: Solve for x
    x = 100,194.84/381.12
  6. Step 6: Final answer
    x = 262.90

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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.