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Finding the Fourth Proportional to 222.66, 306.79 and 207.27

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Solution

The fourth proportional to 222.66, 306.79 and 207.27 is: 285.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.66 : 306.79 = 207.27 : x
  2. Step 2: Convert to fraction form
    222.66/306.79 = 207.27/x
  3. Step 3: Cross multiply
    222.66x = 306.79 × 207.27
  4. Step 4: Simplify right side
    222.66x = 63,587.85
  5. Step 5: Solve for x
    x = 63,587.85/222.66
  6. Step 6: Final answer
    x = 285.58

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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.