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Finding the Fourth Proportional to 439.45, 606.72 and 273.82

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Solution

The fourth proportional to 439.45, 606.72 and 273.82 is: 378.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.45 : 606.72 = 273.82 : x
  2. Step 2: Convert to fraction form
    439.45/606.72 = 273.82/x
  3. Step 3: Cross multiply
    439.45x = 606.72 × 273.82
  4. Step 4: Simplify right side
    439.45x = 166,132.07
  5. Step 5: Solve for x
    x = 166,132.07/439.45
  6. Step 6: Final answer
    x = 378.05

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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.