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Finding the Fourth Proportional to 418.24, 626.02 and 222.96

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Solution

The fourth proportional to 418.24, 626.02 and 222.96 is: 333.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    418.24 : 626.02 = 222.96 : x
  2. Step 2: Convert to fraction form
    418.24/626.02 = 222.96/x
  3. Step 3: Cross multiply
    418.24x = 626.02 × 222.96
  4. Step 4: Simplify right side
    418.24x = 139,577.42
  5. Step 5: Solve for x
    x = 139,577.42/418.24
  6. Step 6: Final answer
    x = 333.73

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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.