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Finding the Third Proportional to 808.63 and 1,236.50

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Solution

The third proportional to 808.63 and 1,236.50 is: 1,890.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    808.63 : 1,236.50 = 1,236.50 : x
  2. Step 2: Convert to fraction form
    808.63/1,236.50 = 1,236.50/x
  3. Step 3: Cross multiply
    808.63x = 1,236.50 × 1,236.50
  4. Step 4: Simplify right side
    808.63x = 1,528,932.25
  5. Step 5: Solve for x
    x = 1,528,932.25/808.63
  6. Step 6: Final answer
    x = 1,890.78

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.