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Finding the Fourth Proportional to 422.43, 633.02 and 238.88

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Solution

The fourth proportional to 422.43, 633.02 and 238.88 is: 357.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    422.43 : 633.02 = 238.88 : x
  2. Step 2: Convert to fraction form
    422.43/633.02 = 238.88/x
  3. Step 3: Cross multiply
    422.43x = 633.02 × 238.88
  4. Step 4: Simplify right side
    422.43x = 151,218.00
  5. Step 5: Solve for x
    x = 151,218.00/422.43
  6. Step 6: Final answer
    x = 357.97

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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.