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Finding the Fourth Proportional to 234.67, 323.69 and 155.98

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Solution

The fourth proportional to 234.67, 323.69 and 155.98 is: 215.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.67 : 323.69 = 155.98 : x
  2. Step 2: Convert to fraction form
    234.67/323.69 = 155.98/x
  3. Step 3: Cross multiply
    234.67x = 323.69 × 155.98
  4. Step 4: Simplify right side
    234.67x = 50,489.96
  5. Step 5: Solve for x
    x = 50,489.96/234.67
  6. Step 6: Final answer
    x = 215.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.