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Finding the Third Proportional to 688.77 and 1,034.68

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Solution

The third proportional to 688.77 and 1,034.68 is: 1,554.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    688.77 : 1,034.68 = 1,034.68 : x
  2. Step 2: Convert to fraction form
    688.77/1,034.68 = 1,034.68/x
  3. Step 3: Cross multiply
    688.77x = 1,034.68 × 1,034.68
  4. Step 4: Simplify right side
    688.77x = 1,070,555.18
  5. Step 5: Solve for x
    x = 1,070,555.18/688.77
  6. Step 6: Final answer
    x = 1,554.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.