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Finding the Fourth Proportional to 273.88, 378.05 and 163.39

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Solution

The fourth proportional to 273.88, 378.05 and 163.39 is: 225.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.88 : 378.05 = 163.39 : x
  2. Step 2: Convert to fraction form
    273.88/378.05 = 163.39/x
  3. Step 3: Cross multiply
    273.88x = 378.05 × 163.39
  4. Step 4: Simplify right side
    273.88x = 61,769.59
  5. Step 5: Solve for x
    x = 61,769.59/273.88
  6. Step 6: Final answer
    x = 225.54

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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.