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Finding the Third Proportional to 416.81 and 905.34

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Solution

The third proportional to 416.81 and 905.34 is: 1,966.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.81 : 905.34 = 905.34 : x
  2. Step 2: Convert to fraction form
    416.81/905.34 = 905.34/x
  3. Step 3: Cross multiply
    416.81x = 905.34 × 905.34
  4. Step 4: Simplify right side
    416.81x = 819,647.31
  5. Step 5: Solve for x
    x = 819,647.31/416.81
  6. Step 6: Final answer
    x = 1,966.47

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.