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Finding the Third Proportional to 397.88 and 602.06

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Solution

The third proportional to 397.88 and 602.06 is: 911.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.88 : 602.06 = 602.06 : x
  2. Step 2: Convert to fraction form
    397.88/602.06 = 602.06/x
  3. Step 3: Cross multiply
    397.88x = 602.06 × 602.06
  4. Step 4: Simplify right side
    397.88x = 362,479.25
  5. Step 5: Solve for x
    x = 362,479.25/397.88
  6. Step 6: Final answer
    x = 911.04

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.