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Finding the Fourth Proportional to 222.48, 334.44 and 206.64

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Solution

The fourth proportional to 222.48, 334.44 and 206.64 is: 310.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.48 : 334.44 = 206.64 : x
  2. Step 2: Convert to fraction form
    222.48/334.44 = 206.64/x
  3. Step 3: Cross multiply
    222.48x = 334.44 × 206.64
  4. Step 4: Simplify right side
    222.48x = 69,108.68
  5. Step 5: Solve for x
    x = 69,108.68/222.48
  6. Step 6: Final answer
    x = 310.63

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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.