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Finding the Fourth Proportional to 273.72, 376.92 and 218.22

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Solution

The fourth proportional to 273.72, 376.92 and 218.22 is: 300.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.72 : 376.92 = 218.22 : x
  2. Step 2: Convert to fraction form
    273.72/376.92 = 218.22/x
  3. Step 3: Cross multiply
    273.72x = 376.92 × 218.22
  4. Step 4: Simplify right side
    273.72x = 82,251.48
  5. Step 5: Solve for x
    x = 82,251.48/273.72
  6. Step 6: Final answer
    x = 300.49

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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.