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Finding the Third Proportional to 202.08 and 321.54

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Solution

The third proportional to 202.08 and 321.54 is: 511.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    202.08 : 321.54 = 321.54 : x
  2. Step 2: Convert to fraction form
    202.08/321.54 = 321.54/x
  3. Step 3: Cross multiply
    202.08x = 321.54 × 321.54
  4. Step 4: Simplify right side
    202.08x = 103,387.37
  5. Step 5: Solve for x
    x = 103,387.37/202.08
  6. Step 6: Final answer
    x = 511.62

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.