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Finding the Third Proportional to 777.73 and 1,646.54

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Solution

The third proportional to 777.73 and 1,646.54 is: 3,485.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    777.73 : 1,646.54 = 1,646.54 : x
  2. Step 2: Convert to fraction form
    777.73/1,646.54 = 1,646.54/x
  3. Step 3: Cross multiply
    777.73x = 1,646.54 × 1,646.54
  4. Step 4: Simplify right side
    777.73x = 2,711,103.75
  5. Step 5: Solve for x
    x = 2,711,103.75/777.73
  6. Step 6: Final answer
    x = 3,485.93

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.