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Finding the Third Proportional to 711.91 and 777.41

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Solution

The third proportional to 711.91 and 777.41 is: 848.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    711.91 : 777.41 = 777.41 : x
  2. Step 2: Convert to fraction form
    711.91/777.41 = 777.41/x
  3. Step 3: Cross multiply
    711.91x = 777.41 × 777.41
  4. Step 4: Simplify right side
    711.91x = 604,366.55
  5. Step 5: Solve for x
    x = 604,366.55/711.91
  6. Step 6: Final answer
    x = 848.93

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.