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Finding the Third Proportional to 636.75 and 957.38

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Solution

The third proportional to 636.75 and 957.38 is: 1,439.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.75 : 957.38 = 957.38 : x
  2. Step 2: Convert to fraction form
    636.75/957.38 = 957.38/x
  3. Step 3: Cross multiply
    636.75x = 957.38 × 957.38
  4. Step 4: Simplify right side
    636.75x = 916,566.89
  5. Step 5: Solve for x
    x = 916,566.89/636.75
  6. Step 6: Final answer
    x = 1,439.45

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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.