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Finding the Fourth Proportional to 235.33, 351.23 and 215.73

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Solution

The fourth proportional to 235.33, 351.23 and 215.73 is: 321.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.33 : 351.23 = 215.73 : x
  2. Step 2: Convert to fraction form
    235.33/351.23 = 215.73/x
  3. Step 3: Cross multiply
    235.33x = 351.23 × 215.73
  4. Step 4: Simplify right side
    235.33x = 75,768.45
  5. Step 5: Solve for x
    x = 75,768.45/235.33
  6. Step 6: Final answer
    x = 321.96

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.