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Finding the Third Proportional to 192.80 and 419.77

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Solution

The third proportional to 192.80 and 419.77 is: 913.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.80 : 419.77 = 419.77 : x
  2. Step 2: Convert to fraction form
    192.80/419.77 = 419.77/x
  3. Step 3: Cross multiply
    192.80x = 419.77 × 419.77
  4. Step 4: Simplify right side
    192.80x = 176,203.18
  5. Step 5: Solve for x
    x = 176,203.18/192.80
  6. Step 6: Final answer
    x = 913.93

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.