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Finding the Third Proportional to 208.13 and 305.16

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Solution

The third proportional to 208.13 and 305.16 is: 447.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    208.13 : 305.16 = 305.16 : x
  2. Step 2: Convert to fraction form
    208.13/305.16 = 305.16/x
  3. Step 3: Cross multiply
    208.13x = 305.16 × 305.16
  4. Step 4: Simplify right side
    208.13x = 93,120.34
  5. Step 5: Solve for x
    x = 93,120.34/208.13
  6. Step 6: Final answer
    x = 447.43

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.