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Finding the Fourth Proportional to 206.55, 284.56 and 171.37

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Solution

The fourth proportional to 206.55, 284.56 and 171.37 is: 236.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    206.55 : 284.56 = 171.37 : x
  2. Step 2: Convert to fraction form
    206.55/284.56 = 171.37/x
  3. Step 3: Cross multiply
    206.55x = 284.56 × 171.37
  4. Step 4: Simplify right side
    206.55x = 48,765.05
  5. Step 5: Solve for x
    x = 48,765.05/206.55
  6. Step 6: Final answer
    x = 236.09

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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.