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Finding the Fourth Proportional to 276.23, 381.27 and 171.33

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Solution

The fourth proportional to 276.23, 381.27 and 171.33 is: 236.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.23 : 381.27 = 171.33 : x
  2. Step 2: Convert to fraction form
    276.23/381.27 = 171.33/x
  3. Step 3: Cross multiply
    276.23x = 381.27 × 171.33
  4. Step 4: Simplify right side
    276.23x = 65,322.99
  5. Step 5: Solve for x
    x = 65,322.99/276.23
  6. Step 6: Final answer
    x = 236.48

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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.