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Finding the Fourth Proportional to 276.44, 381.41 and 178.25

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Solution

The fourth proportional to 276.44, 381.41 and 178.25 is: 245.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.44 : 381.41 = 178.25 : x
  2. Step 2: Convert to fraction form
    276.44/381.41 = 178.25/x
  3. Step 3: Cross multiply
    276.44x = 381.41 × 178.25
  4. Step 4: Simplify right side
    276.44x = 67,986.33
  5. Step 5: Solve for x
    x = 67,986.33/276.44
  6. Step 6: Final answer
    x = 245.94

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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.