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Finding the Fourth Proportional to 222.07, 306.49 and 133.56

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Solution

The fourth proportional to 222.07, 306.49 and 133.56 is: 184.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.07 : 306.49 = 133.56 : x
  2. Step 2: Convert to fraction form
    222.07/306.49 = 133.56/x
  3. Step 3: Cross multiply
    222.07x = 306.49 × 133.56
  4. Step 4: Simplify right side
    222.07x = 40,934.80
  5. Step 5: Solve for x
    x = 40,934.80/222.07
  6. Step 6: Final answer
    x = 184.33

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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.