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Finding the Fourth Proportional to 234.89, 351.98 and 143.54

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Solution

The fourth proportional to 234.89, 351.98 and 143.54 is: 215.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.89 : 351.98 = 143.54 : x
  2. Step 2: Convert to fraction form
    234.89/351.98 = 143.54/x
  3. Step 3: Cross multiply
    234.89x = 351.98 × 143.54
  4. Step 4: Simplify right side
    234.89x = 50,520.73
  5. Step 5: Solve for x
    x = 50,520.73/234.89
  6. Step 6: Final answer
    x = 215.09

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.