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Finding the Fourth Proportional to 235.67, 351.51 and 222.11

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Solution

The fourth proportional to 235.67, 351.51 and 222.11 is: 331.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.67 : 351.51 = 222.11 : x
  2. Step 2: Convert to fraction form
    235.67/351.51 = 222.11/x
  3. Step 3: Cross multiply
    235.67x = 351.51 × 222.11
  4. Step 4: Simplify right side
    235.67x = 78,073.65
  5. Step 5: Solve for x
    x = 78,073.65/235.67
  6. Step 6: Final answer
    x = 331.29

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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.