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Finding the Fourth Proportional to 222.05, 334.73 and 207.18

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Solution

The fourth proportional to 222.05, 334.73 and 207.18 is: 312.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.05 : 334.73 = 207.18 : x
  2. Step 2: Convert to fraction form
    222.05/334.73 = 207.18/x
  3. Step 3: Cross multiply
    222.05x = 334.73 × 207.18
  4. Step 4: Simplify right side
    222.05x = 69,348.52
  5. Step 5: Solve for x
    x = 69,348.52/222.05
  6. Step 6: Final answer
    x = 312.32

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.