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Finding the Third Proportional to 426 and 579.75

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Solution

The third proportional to 426 and 579.75 is: 788.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    426 : 579.75 = 579.75 : x
  2. Step 2: Convert to fraction form
    426/579.75 = 579.75/x
  3. Step 3: Cross multiply
    426x = 579.75 × 579.75
  4. Step 4: Simplify right side
    426x = 336,110.06
  5. Step 5: Solve for x
    x = 336,110.06/426
  6. Step 6: Final answer
    x = 788.99

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.