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Finding the Fourth Proportional to 609.44, 911.86 and 404.26

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Solution

The fourth proportional to 609.44, 911.86 and 404.26 is: 604.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.44 : 911.86 = 404.26 : x
  2. Step 2: Convert to fraction form
    609.44/911.86 = 404.26/x
  3. Step 3: Cross multiply
    609.44x = 911.86 × 404.26
  4. Step 4: Simplify right side
    609.44x = 368,625.23
  5. Step 5: Solve for x
    x = 368,625.23/609.44
  6. Step 6: Final answer
    x = 604.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.