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Finding the Fourth Proportional to 206, 283.72 and 191.65

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Solution

The fourth proportional to 206, 283.72 and 191.65 is: 263.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    206 : 283.72 = 191.65 : x
  2. Step 2: Convert to fraction form
    206/283.72 = 191.65/x
  3. Step 3: Cross multiply
    206x = 283.72 × 191.65
  4. Step 4: Simplify right side
    206x = 54,374.94
  5. Step 5: Solve for x
    x = 54,374.94/206
  6. Step 6: Final answer
    x = 263.96

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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.