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Finding the Third Proportional to 864.75 and 935.63

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Solution

The third proportional to 864.75 and 935.63 is: 1,012.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    864.75 : 935.63 = 935.63 : x
  2. Step 2: Convert to fraction form
    864.75/935.63 = 935.63/x
  3. Step 3: Cross multiply
    864.75x = 935.63 × 935.63
  4. Step 4: Simplify right side
    864.75x = 875,394.14
  5. Step 5: Solve for x
    x = 875,394.14/864.75
  6. Step 6: Final answer
    x = 1,012.31

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Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.