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Finding the Fourth Proportional to 638.07, 957.26 and 227.24

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Solution

The fourth proportional to 638.07, 957.26 and 227.24 is: 340.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    638.07 : 957.26 = 227.24 : x
  2. Step 2: Convert to fraction form
    638.07/957.26 = 227.24/x
  3. Step 3: Cross multiply
    638.07x = 957.26 × 227.24
  4. Step 4: Simplify right side
    638.07x = 217,526.63
  5. Step 5: Solve for x
    x = 217,526.63/638.07
  6. Step 6: Final answer
    x = 340.91

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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.