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Finding the Fourth Proportional to 397.73, 548.31 and 273.19

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Solution

The fourth proportional to 397.73, 548.31 and 273.19 is: 376.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.73 : 548.31 = 273.19 : x
  2. Step 2: Convert to fraction form
    397.73/548.31 = 273.19/x
  3. Step 3: Cross multiply
    397.73x = 548.31 × 273.19
  4. Step 4: Simplify right side
    397.73x = 149,792.81
  5. Step 5: Solve for x
    x = 149,792.81/397.73
  6. Step 6: Final answer
    x = 376.62

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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.