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Finding the Third Proportional to 612.56 and 934.88

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Solution

The third proportional to 612.56 and 934.88 is: 1,426.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.56 : 934.88 = 934.88 : x
  2. Step 2: Convert to fraction form
    612.56/934.88 = 934.88/x
  3. Step 3: Cross multiply
    612.56x = 934.88 × 934.88
  4. Step 4: Simplify right side
    612.56x = 873,991.27
  5. Step 5: Solve for x
    x = 873,991.27/612.56
  6. Step 6: Final answer
    x = 1,426.78

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.