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Finding the Fourth Proportional to 223.21, 308.01 and 207.73

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Solution

The fourth proportional to 223.21, 308.01 and 207.73 is: 286.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.21 : 308.01 = 207.73 : x
  2. Step 2: Convert to fraction form
    223.21/308.01 = 207.73/x
  3. Step 3: Cross multiply
    223.21x = 308.01 × 207.73
  4. Step 4: Simplify right side
    223.21x = 63,982.92
  5. Step 5: Solve for x
    x = 63,982.92/223.21
  6. Step 6: Final answer
    x = 286.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.