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Finding the Fourth Proportional to 154.73, 231.81 and 68.00

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Solution

The fourth proportional to 154.73, 231.81 and 68.00 is: 101.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.73 : 231.81 = 68.00 : x
  2. Step 2: Convert to fraction form
    154.73/231.81 = 68.00/x
  3. Step 3: Cross multiply
    154.73x = 231.81 × 68.00
  4. Step 4: Simplify right side
    154.73x = 15,761.92
  5. Step 5: Solve for x
    x = 15,761.92/154.73
  6. Step 6: Final answer
    x = 101.87

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.