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Finding the Fourth Proportional to 154.23, 230.86 and 144.24

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Solution

The fourth proportional to 154.23, 230.86 and 144.24 is: 215.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.23 : 230.86 = 144.24 : x
  2. Step 2: Convert to fraction form
    154.23/230.86 = 144.24/x
  3. Step 3: Cross multiply
    154.23x = 230.86 × 144.24
  4. Step 4: Simplify right side
    154.23x = 33,299.25
  5. Step 5: Solve for x
    x = 33,299.25/154.23
  6. Step 6: Final answer
    x = 215.91

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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.