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Finding the Fourth Proportional to 233.89, 350.90 and 112.12

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Solution

The fourth proportional to 233.89, 350.90 and 112.12 is: 168.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.89 : 350.90 = 112.12 : x
  2. Step 2: Convert to fraction form
    233.89/350.90 = 112.12/x
  3. Step 3: Cross multiply
    233.89x = 350.90 × 112.12
  4. Step 4: Simplify right side
    233.89x = 39,341.89
  5. Step 5: Solve for x
    x = 39,341.89/233.89
  6. Step 6: Final answer
    x = 168.21

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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.