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Finding the Fourth Proportional to 250.15, 375.32 and 121.81

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Solution

The fourth proportional to 250.15, 375.32 and 121.81 is: 182.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.15 : 375.32 = 121.81 : x
  2. Step 2: Convert to fraction form
    250.15/375.32 = 121.81/x
  3. Step 3: Cross multiply
    250.15x = 375.32 × 121.81
  4. Step 4: Simplify right side
    250.15x = 45,717.73
  5. Step 5: Solve for x
    x = 45,717.73/250.15
  6. Step 6: Final answer
    x = 182.76

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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.