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Finding the Fourth Proportional to 276.70, 381.82 and 160.25

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Solution

The fourth proportional to 276.70, 381.82 and 160.25 is: 221.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.70 : 381.82 = 160.25 : x
  2. Step 2: Convert to fraction form
    276.70/381.82 = 160.25/x
  3. Step 3: Cross multiply
    276.70x = 381.82 × 160.25
  4. Step 4: Simplify right side
    276.70x = 61,186.66
  5. Step 5: Solve for x
    x = 61,186.66/276.70
  6. Step 6: Final answer
    x = 221.13

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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.