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Finding the Third Proportional to 202 and 320.38

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Solution

The third proportional to 202 and 320.38 is: 508.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    202 : 320.38 = 320.38 : x
  2. Step 2: Convert to fraction form
    202/320.38 = 320.38/x
  3. Step 3: Cross multiply
    202x = 320.38 × 320.38
  4. Step 4: Simplify right side
    202x = 102,640.14
  5. Step 5: Solve for x
    x = 102,640.14/202
  6. Step 6: Final answer
    x = 508.12

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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.