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Finding the Third Proportional to 668.25 and 939.94

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Solution

The third proportional to 668.25 and 939.94 is: 1,322.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    668.25 : 939.94 = 939.94 : x
  2. Step 2: Convert to fraction form
    668.25/939.94 = 939.94/x
  3. Step 3: Cross multiply
    668.25x = 939.94 × 939.94
  4. Step 4: Simplify right side
    668.25x = 883,482.50
  5. Step 5: Solve for x
    x = 883,482.50/668.25
  6. Step 6: Final answer
    x = 1,322.08

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.