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Finding the Fourth Proportional to 269.97, 405.18 and 201.27

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Solution

The fourth proportional to 269.97, 405.18 and 201.27 is: 302.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.97 : 405.18 = 201.27 : x
  2. Step 2: Convert to fraction form
    269.97/405.18 = 201.27/x
  3. Step 3: Cross multiply
    269.97x = 405.18 × 201.27
  4. Step 4: Simplify right side
    269.97x = 81,550.58
  5. Step 5: Solve for x
    x = 81,550.58/269.97
  6. Step 6: Final answer
    x = 302.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.