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Finding the Fourth Proportional to 154.28, 231.53 and 93.44

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Solution

The fourth proportional to 154.28, 231.53 and 93.44 is: 140.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.28 : 231.53 = 93.44 : x
  2. Step 2: Convert to fraction form
    154.28/231.53 = 93.44/x
  3. Step 3: Cross multiply
    154.28x = 231.53 × 93.44
  4. Step 4: Simplify right side
    154.28x = 21,632.54
  5. Step 5: Solve for x
    x = 21,632.54/154.28
  6. Step 6: Final answer
    x = 140.22

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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.