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Finding the Third Proportional to 579.02 and 808.42

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Solution

The third proportional to 579.02 and 808.42 is: 1,128.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.02 : 808.42 = 808.42 : x
  2. Step 2: Convert to fraction form
    579.02/808.42 = 808.42/x
  3. Step 3: Cross multiply
    579.02x = 808.42 × 808.42
  4. Step 4: Simplify right side
    579.02x = 653,539.61
  5. Step 5: Solve for x
    x = 653,539.61/579.02
  6. Step 6: Final answer
    x = 1,128.69

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.