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Finding the Fourth Proportional to 277.26, 382.37 and 221.97

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Solution

The fourth proportional to 277.26, 382.37 and 221.97 is: 306.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.26 : 382.37 = 221.97 : x
  2. Step 2: Convert to fraction form
    277.26/382.37 = 221.97/x
  3. Step 3: Cross multiply
    277.26x = 382.37 × 221.97
  4. Step 4: Simplify right side
    277.26x = 84,876.24
  5. Step 5: Solve for x
    x = 84,876.24/277.26
  6. Step 6: Final answer
    x = 306.13

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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.