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Finding the Fourth Proportional to 273.30, 409.41 and 201.21

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Solution

The fourth proportional to 273.30, 409.41 and 201.21 is: 301.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.30 : 409.41 = 201.21 : x
  2. Step 2: Convert to fraction form
    273.30/409.41 = 201.21/x
  3. Step 3: Cross multiply
    273.30x = 409.41 × 201.21
  4. Step 4: Simplify right side
    273.30x = 82,377.39
  5. Step 5: Solve for x
    x = 82,377.39/273.30
  6. Step 6: Final answer
    x = 301.42

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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.