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Finding the Fourth Proportional to 612.97, 919.89 and 222.97

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Solution

The fourth proportional to 612.97, 919.89 and 222.97 is: 334.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.97 : 919.89 = 222.97 : x
  2. Step 2: Convert to fraction form
    612.97/919.89 = 222.97/x
  3. Step 3: Cross multiply
    612.97x = 919.89 × 222.97
  4. Step 4: Simplify right side
    612.97x = 205,105.57
  5. Step 5: Solve for x
    x = 205,105.57/612.97
  6. Step 6: Final answer
    x = 334.61

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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.