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Finding the Third Proportional to 369.28 and 783.56

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Solution

The third proportional to 369.28 and 783.56 is: 1,662.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.28 : 783.56 = 783.56 : x
  2. Step 2: Convert to fraction form
    369.28/783.56 = 783.56/x
  3. Step 3: Cross multiply
    369.28x = 783.56 × 783.56
  4. Step 4: Simplify right side
    369.28x = 613,970.19
  5. Step 5: Solve for x
    x = 613,970.19/369.28
  6. Step 6: Final answer
    x = 1,662.61

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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.