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Finding the Fourth Proportional to 222.21, 306.54 and 134.73

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Solution

The fourth proportional to 222.21, 306.54 and 134.73 is: 185.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.21 : 306.54 = 134.73 : x
  2. Step 2: Convert to fraction form
    222.21/306.54 = 134.73/x
  3. Step 3: Cross multiply
    222.21x = 306.54 × 134.73
  4. Step 4: Simplify right side
    222.21x = 41,300.13
  5. Step 5: Solve for x
    x = 41,300.13/222.21
  6. Step 6: Final answer
    x = 185.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.