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Finding the Third Proportional to 696.25 and 1,084.25

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Solution

The third proportional to 696.25 and 1,084.25 is: 1,688.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    696.25 : 1,084.25 = 1,084.25 : x
  2. Step 2: Convert to fraction form
    696.25/1,084.25 = 1,084.25/x
  3. Step 3: Cross multiply
    696.25x = 1,084.25 × 1,084.25
  4. Step 4: Simplify right side
    696.25x = 1,175,598.06
  5. Step 5: Solve for x
    x = 1,175,598.06/696.25
  6. Step 6: Final answer
    x = 1,688.47

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.