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Finding the Fourth Proportional to 439.80, 606.92 and 273.96

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Solution

The fourth proportional to 439.80, 606.92 and 273.96 is: 378.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.80 : 606.92 = 273.96 : x
  2. Step 2: Convert to fraction form
    439.80/606.92 = 273.96/x
  3. Step 3: Cross multiply
    439.80x = 606.92 × 273.96
  4. Step 4: Simplify right side
    439.80x = 166,271.80
  5. Step 5: Solve for x
    x = 166,271.80/439.80
  6. Step 6: Final answer
    x = 378.06

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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.