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Finding the Fourth Proportional to 222.22, 332.79 and 220.06

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Solution

The fourth proportional to 222.22, 332.79 and 220.06 is: 329.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.22 : 332.79 = 220.06 : x
  2. Step 2: Convert to fraction form
    222.22/332.79 = 220.06/x
  3. Step 3: Cross multiply
    222.22x = 332.79 × 220.06
  4. Step 4: Simplify right side
    222.22x = 73,233.77
  5. Step 5: Solve for x
    x = 73,233.77/222.22
  6. Step 6: Final answer
    x = 329.56

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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.