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Finding the Fourth Proportional to 192.89, 265.82 and 153.42

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Solution

The fourth proportional to 192.89, 265.82 and 153.42 is: 211.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.89 : 265.82 = 153.42 : x
  2. Step 2: Convert to fraction form
    192.89/265.82 = 153.42/x
  3. Step 3: Cross multiply
    192.89x = 265.82 × 153.42
  4. Step 4: Simplify right side
    192.89x = 40,781.34
  5. Step 5: Solve for x
    x = 40,781.34/192.89
  6. Step 6: Final answer
    x = 211.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.