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Finding the Fourth Proportional to 655.40, 983.19 and 222.44

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Solution

The fourth proportional to 655.40, 983.19 and 222.44 is: 333.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.40 : 983.19 = 222.44 : x
  2. Step 2: Convert to fraction form
    655.40/983.19 = 222.44/x
  3. Step 3: Cross multiply
    655.40x = 983.19 × 222.44
  4. Step 4: Simplify right side
    655.40x = 218,697.77
  5. Step 5: Solve for x
    x = 218,697.77/655.40
  6. Step 6: Final answer
    x = 333.69

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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.