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Finding the Fourth Proportional to 201.71, 302.72 and 80.06

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Solution

The fourth proportional to 201.71, 302.72 and 80.06 is: 120.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.71 : 302.72 = 80.06 : x
  2. Step 2: Convert to fraction form
    201.71/302.72 = 80.06/x
  3. Step 3: Cross multiply
    201.71x = 302.72 × 80.06
  4. Step 4: Simplify right side
    201.71x = 24,234.30
  5. Step 5: Solve for x
    x = 24,234.30/201.71
  6. Step 6: Final answer
    x = 120.15

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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.