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Finding the Third Proportional to 511.78 and 713.63

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Solution

The third proportional to 511.78 and 713.63 is: 995.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.78 : 713.63 = 713.63 : x
  2. Step 2: Convert to fraction form
    511.78/713.63 = 713.63/x
  3. Step 3: Cross multiply
    511.78x = 713.63 × 713.63
  4. Step 4: Simplify right side
    511.78x = 509,260.64
  5. Step 5: Solve for x
    x = 509,260.64/511.78
  6. Step 6: Final answer
    x = 995.07

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.