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Finding the Fourth Proportional to 154.87, 213.72 and 95.83

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Solution

The fourth proportional to 154.87, 213.72 and 95.83 is: 132.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.87 : 213.72 = 95.83 : x
  2. Step 2: Convert to fraction form
    154.87/213.72 = 95.83/x
  3. Step 3: Cross multiply
    154.87x = 213.72 × 95.83
  4. Step 4: Simplify right side
    154.87x = 20,480.79
  5. Step 5: Solve for x
    x = 20,480.79/154.87
  6. Step 6: Final answer
    x = 132.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.