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Finding the Fourth Proportional to 655.11, 982.66 and 222.25

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Solution

The fourth proportional to 655.11, 982.66 and 222.25 is: 333.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.11 : 982.66 = 222.25 : x
  2. Step 2: Convert to fraction form
    655.11/982.66 = 222.25/x
  3. Step 3: Cross multiply
    655.11x = 982.66 × 222.25
  4. Step 4: Simplify right side
    655.11x = 218,396.19
  5. Step 5: Solve for x
    x = 218,396.19/655.11
  6. Step 6: Final answer
    x = 333.37

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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.