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Finding the Fourth Proportional to 154.43, 231.81 and 73.33

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Solution

The fourth proportional to 154.43, 231.81 and 73.33 is: 110.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.43 : 231.81 = 73.33 : x
  2. Step 2: Convert to fraction form
    154.43/231.81 = 73.33/x
  3. Step 3: Cross multiply
    154.43x = 231.81 × 73.33
  4. Step 4: Simplify right side
    154.43x = 16,998.63
  5. Step 5: Solve for x
    x = 16,998.63/154.43
  6. Step 6: Final answer
    x = 110.07

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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.