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Finding the Third Proportional to 388 and 835

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Solution

The third proportional to 388 and 835 is: 1,796.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    388 : 835 = 835 : x
  2. Step 2: Convert to fraction form
    388/835 = 835/x
  3. Step 3: Cross multiply
    388x = 835 × 835
  4. Step 4: Simplify right side
    388x = 697,225
  5. Step 5: Solve for x
    x = 697,225/388
  6. Step 6: Final answer
    x = 1,796.97

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These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.