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Finding the Third Proportional to 783.75 and 1,107.19

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Solution

The third proportional to 783.75 and 1,107.19 is: 1,564.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    783.75 : 1,107.19 = 1,107.19 : x
  2. Step 2: Convert to fraction form
    783.75/1,107.19 = 1,107.19/x
  3. Step 3: Cross multiply
    783.75x = 1,107.19 × 1,107.19
  4. Step 4: Simplify right side
    783.75x = 1,225,864.16
  5. Step 5: Solve for x
    x = 1,225,864.16/783.75
  6. Step 6: Final answer
    x = 1,564.10

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.