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Finding the Fourth Proportional to 153.66, 230.68 and 119.38

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Solution

The fourth proportional to 153.66, 230.68 and 119.38 is: 179.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.66 : 230.68 = 119.38 : x
  2. Step 2: Convert to fraction form
    153.66/230.68 = 119.38/x
  3. Step 3: Cross multiply
    153.66x = 230.68 × 119.38
  4. Step 4: Simplify right side
    153.66x = 27,538.58
  5. Step 5: Solve for x
    x = 27,538.58/153.66
  6. Step 6: Final answer
    x = 179.22

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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.