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Finding the Fourth Proportional to 439.28, 606.18 and 273.49

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Solution

The fourth proportional to 439.28, 606.18 and 273.49 is: 377.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.28 : 606.18 = 273.49 : x
  2. Step 2: Convert to fraction form
    439.28/606.18 = 273.49/x
  3. Step 3: Cross multiply
    439.28x = 606.18 × 273.49
  4. Step 4: Simplify right side
    439.28x = 165,784.17
  5. Step 5: Solve for x
    x = 165,784.17/439.28
  6. Step 6: Final answer
    x = 377.40

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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.