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Finding the Third Proportional to 163.50 and 265.13

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Solution

The third proportional to 163.50 and 265.13 is: 429.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    163.50 : 265.13 = 265.13 : x
  2. Step 2: Convert to fraction form
    163.50/265.13 = 265.13/x
  3. Step 3: Cross multiply
    163.50x = 265.13 × 265.13
  4. Step 4: Simplify right side
    163.50x = 70,291.27
  5. Step 5: Solve for x
    x = 70,291.27/163.50
  6. Step 6: Final answer
    x = 429.92

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Why These Related Problems?

These problems maintain the same ratio (1.62) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.