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Finding the Third Proportional to 680 and 973

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Solution

The third proportional to 680 and 973 is: 1,392.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    680 : 973 = 973 : x
  2. Step 2: Convert to fraction form
    680/973 = 973/x
  3. Step 3: Cross multiply
    680x = 973 × 973
  4. Step 4: Simplify right side
    680x = 946,729
  5. Step 5: Solve for x
    x = 946,729/680
  6. Step 6: Final answer
    x = 1,392.25

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.