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Finding the Third Proportional to 623.44 and 1,311.44

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Solution

The third proportional to 623.44 and 1,311.44 is: 2,758.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.44 : 1,311.44 = 1,311.44 : x
  2. Step 2: Convert to fraction form
    623.44/1,311.44 = 1,311.44/x
  3. Step 3: Cross multiply
    623.44x = 1,311.44 × 1,311.44
  4. Step 4: Simplify right side
    623.44x = 1,719,868.32
  5. Step 5: Solve for x
    x = 1,719,868.32/623.44
  6. Step 6: Final answer
    x = 2,758.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.