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Finding the Fourth Proportional to 439.26, 606.03 and 308.22

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Solution

The fourth proportional to 439.26, 606.03 and 308.22 is: 425.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.26 : 606.03 = 308.22 : x
  2. Step 2: Convert to fraction form
    439.26/606.03 = 308.22/x
  3. Step 3: Cross multiply
    439.26x = 606.03 × 308.22
  4. Step 4: Simplify right side
    439.26x = 186,790.57
  5. Step 5: Solve for x
    x = 186,790.57/439.26
  6. Step 6: Final answer
    x = 425.24

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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.