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Finding the Fourth Proportional to 206.56, 310.08 and 161.44

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Solution

The fourth proportional to 206.56, 310.08 and 161.44 is: 242.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    206.56 : 310.08 = 161.44 : x
  2. Step 2: Convert to fraction form
    206.56/310.08 = 161.44/x
  3. Step 3: Cross multiply
    206.56x = 310.08 × 161.44
  4. Step 4: Simplify right side
    206.56x = 50,059.32
  5. Step 5: Solve for x
    x = 50,059.32/206.56
  6. Step 6: Final answer
    x = 242.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.