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Finding the Third Proportional to 623.63 and 1,338.38

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Solution

The third proportional to 623.63 and 1,338.38 is: 2,872.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.63 : 1,338.38 = 1,338.38 : x
  2. Step 2: Convert to fraction form
    623.63/1,338.38 = 1,338.38/x
  3. Step 3: Cross multiply
    623.63x = 1,338.38 × 1,338.38
  4. Step 4: Simplify right side
    623.63x = 1,791,247.64
  5. Step 5: Solve for x
    x = 1,791,247.64/623.63
  6. Step 6: Final answer
    x = 2,872.32

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.