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Finding the Fourth Proportional to 439.90, 606.76 and 273.84

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Solution

The fourth proportional to 439.90, 606.76 and 273.84 is: 377.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.90 : 606.76 = 273.84 : x
  2. Step 2: Convert to fraction form
    439.90/606.76 = 273.84/x
  3. Step 3: Cross multiply
    439.90x = 606.76 × 273.84
  4. Step 4: Simplify right side
    439.90x = 166,155.16
  5. Step 5: Solve for x
    x = 166,155.16/439.90
  6. Step 6: Final answer
    x = 377.71

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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.