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Finding the Fourth Proportional to 235.98, 352.08 and 215.73

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Solution

The fourth proportional to 235.98, 352.08 and 215.73 is: 321.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.98 : 352.08 = 215.73 : x
  2. Step 2: Convert to fraction form
    235.98/352.08 = 215.73/x
  3. Step 3: Cross multiply
    235.98x = 352.08 × 215.73
  4. Step 4: Simplify right side
    235.98x = 75,954.22
  5. Step 5: Solve for x
    x = 75,954.22/235.98
  6. Step 6: Final answer
    x = 321.87

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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.