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Finding the Fourth Proportional to 439.26, 605.91 and 334.36

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Solution

The fourth proportional to 439.26, 605.91 and 334.36 is: 461.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.26 : 605.91 = 334.36 : x
  2. Step 2: Convert to fraction form
    439.26/605.91 = 334.36/x
  3. Step 3: Cross multiply
    439.26x = 605.91 × 334.36
  4. Step 4: Simplify right side
    439.26x = 202,594.08
  5. Step 5: Solve for x
    x = 202,594.08/439.26
  6. Step 6: Final answer
    x = 461.22

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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.