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Finding the Fourth Proportional to 403.97, 557.69 and 273.68

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Solution

The fourth proportional to 403.97, 557.69 and 273.68 is: 377.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.97 : 557.69 = 273.68 : x
  2. Step 2: Convert to fraction form
    403.97/557.69 = 273.68/x
  3. Step 3: Cross multiply
    403.97x = 557.69 × 273.68
  4. Step 4: Simplify right side
    403.97x = 152,624.44
  5. Step 5: Solve for x
    x = 152,624.44/403.97
  6. Step 6: Final answer
    x = 377.81

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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.