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Finding the Third Proportional to 683.44 and 1,070.72

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Solution

The third proportional to 683.44 and 1,070.72 is: 1,677.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    683.44 : 1,070.72 = 1,070.72 : x
  2. Step 2: Convert to fraction form
    683.44/1,070.72 = 1,070.72/x
  3. Step 3: Cross multiply
    683.44x = 1,070.72 × 1,070.72
  4. Step 4: Simplify right side
    683.44x = 1,146,438.64
  5. Step 5: Solve for x
    x = 1,146,438.64/683.44
  6. Step 6: Final answer
    x = 1,677.46

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.