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Finding the Third Proportional to 426.52 and 677.74

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Solution

The third proportional to 426.52 and 677.74 is: 1,076.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    426.52 : 677.74 = 677.74 : x
  2. Step 2: Convert to fraction form
    426.52/677.74 = 677.74/x
  3. Step 3: Cross multiply
    426.52x = 677.74 × 677.74
  4. Step 4: Simplify right side
    426.52x = 459,334.47
  5. Step 5: Solve for x
    x = 459,334.47/426.52
  6. Step 6: Final answer
    x = 1,076.95

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.