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Finding the Fourth Proportional to 222.30, 333.36 and 92.21

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Solution

The fourth proportional to 222.30, 333.36 and 92.21 is: 138.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.30 : 333.36 = 92.21 : x
  2. Step 2: Convert to fraction form
    222.30/333.36 = 92.21/x
  3. Step 3: Cross multiply
    222.30x = 333.36 × 92.21
  4. Step 4: Simplify right side
    222.30x = 30,740.13
  5. Step 5: Solve for x
    x = 30,740.13/222.30
  6. Step 6: Final answer
    x = 138.28

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.