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Finding the Third Proportional to 916.73 and 1,618.31

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Solution

The third proportional to 916.73 and 1,618.31 is: 2,856.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    916.73 : 1,618.31 = 1,618.31 : x
  2. Step 2: Convert to fraction form
    916.73/1,618.31 = 1,618.31/x
  3. Step 3: Cross multiply
    916.73x = 1,618.31 × 1,618.31
  4. Step 4: Simplify right side
    916.73x = 2,618,935.35
  5. Step 5: Solve for x
    x = 2,618,935.35/916.73
  6. Step 6: Final answer
    x = 2,856.81

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Why These Related Problems?

These problems maintain the same ratio (1.77) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.