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Finding the Fourth Proportional to 381.26, 571.59 and 236.68

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Solution

The fourth proportional to 381.26, 571.59 and 236.68 is: 354.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    381.26 : 571.59 = 236.68 : x
  2. Step 2: Convert to fraction form
    381.26/571.59 = 236.68/x
  3. Step 3: Cross multiply
    381.26x = 571.59 × 236.68
  4. Step 4: Simplify right side
    381.26x = 135,282.49
  5. Step 5: Solve for x
    x = 135,282.49/381.26
  6. Step 6: Final answer
    x = 354.83

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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.