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Finding the Third Proportional to 163.25 and 384.50

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Solution

The third proportional to 163.25 and 384.50 is: 905.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    163.25 : 384.50 = 384.50 : x
  2. Step 2: Convert to fraction form
    163.25/384.50 = 384.50/x
  3. Step 3: Cross multiply
    163.25x = 384.50 × 384.50
  4. Step 4: Simplify right side
    163.25x = 147,840.25
  5. Step 5: Solve for x
    x = 147,840.25/163.25
  6. Step 6: Final answer
    x = 905.61

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.