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Finding the Fourth Proportional to 238.96, 332.05 and 235.90

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Solution

The fourth proportional to 238.96, 332.05 and 235.90 is: 327.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.96 : 332.05 = 235.90 : x
  2. Step 2: Convert to fraction form
    238.96/332.05 = 235.90/x
  3. Step 3: Cross multiply
    238.96x = 332.05 × 235.90
  4. Step 4: Simplify right side
    238.96x = 78,330.60
  5. Step 5: Solve for x
    x = 78,330.60/238.96
  6. Step 6: Final answer
    x = 327.80

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.