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Finding the Fourth Proportional to 206.37, 308.06 and 191.34

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Solution

The fourth proportional to 206.37, 308.06 and 191.34 is: 285.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    206.37 : 308.06 = 191.34 : x
  2. Step 2: Convert to fraction form
    206.37/308.06 = 191.34/x
  3. Step 3: Cross multiply
    206.37x = 308.06 × 191.34
  4. Step 4: Simplify right side
    206.37x = 58,943.24
  5. Step 5: Solve for x
    x = 58,943.24/206.37
  6. Step 6: Final answer
    x = 285.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.