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Finding the Third Proportional to 670.25 and 1,434.25

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Solution

The third proportional to 670.25 and 1,434.25 is: 3,069.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.25 : 1,434.25 = 1,434.25 : x
  2. Step 2: Convert to fraction form
    670.25/1,434.25 = 1,434.25/x
  3. Step 3: Cross multiply
    670.25x = 1,434.25 × 1,434.25
  4. Step 4: Simplify right side
    670.25x = 2,057,073.06
  5. Step 5: Solve for x
    x = 2,057,073.06/670.25
  6. Step 6: Final answer
    x = 3,069.11

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.