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Finding the Fourth Proportional to 234.59, 351.67 and 143.09

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Solution

The fourth proportional to 234.59, 351.67 and 143.09 is: 214.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.59 : 351.67 = 143.09 : x
  2. Step 2: Convert to fraction form
    234.59/351.67 = 143.09/x
  3. Step 3: Cross multiply
    234.59x = 351.67 × 143.09
  4. Step 4: Simplify right side
    234.59x = 50,319.93
  5. Step 5: Solve for x
    x = 50,319.93/234.59
  6. Step 6: Final answer
    x = 214.50

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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.