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Finding the Fourth Proportional to 153.38, 230.12 and 119.18

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Solution

The fourth proportional to 153.38, 230.12 and 119.18 is: 178.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.38 : 230.12 = 119.18 : x
  2. Step 2: Convert to fraction form
    153.38/230.12 = 119.18/x
  3. Step 3: Cross multiply
    153.38x = 230.12 × 119.18
  4. Step 4: Simplify right side
    153.38x = 27,425.70
  5. Step 5: Solve for x
    x = 27,425.70/153.38
  6. Step 6: Final answer
    x = 178.81

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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.