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Finding the Third Proportional to 384.43 and 829.62

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Solution

The third proportional to 384.43 and 829.62 is: 1,790.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.43 : 829.62 = 829.62 : x
  2. Step 2: Convert to fraction form
    384.43/829.62 = 829.62/x
  3. Step 3: Cross multiply
    384.43x = 829.62 × 829.62
  4. Step 4: Simplify right side
    384.43x = 688,264.68
  5. Step 5: Solve for x
    x = 688,264.68/384.43
  6. Step 6: Final answer
    x = 1,790.33

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.