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Finding the Fourth Proportional to 397.97, 549.62 and 273.95

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Solution

The fourth proportional to 397.97, 549.62 and 273.95 is: 378.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.97 : 549.62 = 273.95 : x
  2. Step 2: Convert to fraction form
    397.97/549.62 = 273.95/x
  3. Step 3: Cross multiply
    397.97x = 549.62 × 273.95
  4. Step 4: Simplify right side
    397.97x = 150,569.43
  5. Step 5: Solve for x
    x = 150,569.43/397.97
  6. Step 6: Final answer
    x = 378.34

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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.