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Finding the Fourth Proportional to 154.44, 231.08 and 108.88

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Solution

The fourth proportional to 154.44, 231.08 and 108.88 is: 162.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.44 : 231.08 = 108.88 : x
  2. Step 2: Convert to fraction form
    154.44/231.08 = 108.88/x
  3. Step 3: Cross multiply
    154.44x = 231.08 × 108.88
  4. Step 4: Simplify right side
    154.44x = 25,159.99
  5. Step 5: Solve for x
    x = 25,159.99/154.44
  6. Step 6: Final answer
    x = 162.91

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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.