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Finding the Fourth Proportional to 226.05, 339.36 and 215.67

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Solution

The fourth proportional to 226.05, 339.36 and 215.67 is: 323.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.05 : 339.36 = 215.67 : x
  2. Step 2: Convert to fraction form
    226.05/339.36 = 215.67/x
  3. Step 3: Cross multiply
    226.05x = 339.36 × 215.67
  4. Step 4: Simplify right side
    226.05x = 73,189.77
  5. Step 5: Solve for x
    x = 73,189.77/226.05
  6. Step 6: Final answer
    x = 323.78

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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.