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Finding the Fourth Proportional to 269.21, 371.41 and 199.41

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Solution

The fourth proportional to 269.21, 371.41 and 199.41 is: 275.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.21 : 371.41 = 199.41 : x
  2. Step 2: Convert to fraction form
    269.21/371.41 = 199.41/x
  3. Step 3: Cross multiply
    269.21x = 371.41 × 199.41
  4. Step 4: Simplify right side
    269.21x = 74,062.37
  5. Step 5: Solve for x
    x = 74,062.37/269.21
  6. Step 6: Final answer
    x = 275.12

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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.