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Finding the Third Proportional to 679.01 and 1,487.74

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Solution

The third proportional to 679.01 and 1,487.74 is: 3,259.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    679.01 : 1,487.74 = 1,487.74 : x
  2. Step 2: Convert to fraction form
    679.01/1,487.74 = 1,487.74/x
  3. Step 3: Cross multiply
    679.01x = 1,487.74 × 1,487.74
  4. Step 4: Simplify right side
    679.01x = 2,213,376.82
  5. Step 5: Solve for x
    x = 2,213,376.82/679.01
  6. Step 6: Final answer
    x = 3,259.72

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.