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Finding the Fourth Proportional to 606.80, 910.60 and 222.05

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Solution

The fourth proportional to 606.80, 910.60 and 222.05 is: 333.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.80 : 910.60 = 222.05 : x
  2. Step 2: Convert to fraction form
    606.80/910.60 = 222.05/x
  3. Step 3: Cross multiply
    606.80x = 910.60 × 222.05
  4. Step 4: Simplify right side
    606.80x = 202,198.73
  5. Step 5: Solve for x
    x = 202,198.73/606.80
  6. Step 6: Final answer
    x = 333.22

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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.