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Finding the Fourth Proportional to 234.60, 323.63 and 155.95

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Solution

The fourth proportional to 234.60, 323.63 and 155.95 is: 215.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.60 : 323.63 = 155.95 : x
  2. Step 2: Convert to fraction form
    234.60/323.63 = 155.95/x
  3. Step 3: Cross multiply
    234.60x = 323.63 × 155.95
  4. Step 4: Simplify right side
    234.60x = 50,470.10
  5. Step 5: Solve for x
    x = 50,470.10/234.60
  6. Step 6: Final answer
    x = 215.13

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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.