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Finding the Third Proportional to 623.81 and 1,020.09

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Solution

The third proportional to 623.81 and 1,020.09 is: 1,668.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.81 : 1,020.09 = 1,020.09 : x
  2. Step 2: Convert to fraction form
    623.81/1,020.09 = 1,020.09/x
  3. Step 3: Cross multiply
    623.81x = 1,020.09 × 1,020.09
  4. Step 4: Simplify right side
    623.81x = 1,040,591.26
  5. Step 5: Solve for x
    x = 1,040,591.26/623.81
  6. Step 6: Final answer
    x = 1,668.12

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Why These Related Problems?

These problems maintain the same ratio (1.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.