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Finding the Fourth Proportional to 638.01, 957.11 and 227.09

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Solution

The fourth proportional to 638.01, 957.11 and 227.09 is: 340.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    638.01 : 957.11 = 227.09 : x
  2. Step 2: Convert to fraction form
    638.01/957.11 = 227.09/x
  3. Step 3: Cross multiply
    638.01x = 957.11 × 227.09
  4. Step 4: Simplify right side
    638.01x = 217,351.37
  5. Step 5: Solve for x
    x = 217,351.37/638.01
  6. Step 6: Final answer
    x = 340.67

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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.