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Finding the Fourth Proportional to 225.18, 308.60 and 222.33

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Solution

The fourth proportional to 225.18, 308.60 and 222.33 is: 304.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.18 : 308.60 = 222.33 : x
  2. Step 2: Convert to fraction form
    225.18/308.60 = 222.33/x
  3. Step 3: Cross multiply
    225.18x = 308.60 × 222.33
  4. Step 4: Simplify right side
    225.18x = 68,609.93
  5. Step 5: Solve for x
    x = 68,609.93/225.18
  6. Step 6: Final answer
    x = 304.69

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.