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Finding the Fourth Proportional to 177.62, 244.78 and 142.38

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Solution

The fourth proportional to 177.62, 244.78 and 142.38 is: 196.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.62 : 244.78 = 142.38 : x
  2. Step 2: Convert to fraction form
    177.62/244.78 = 142.38/x
  3. Step 3: Cross multiply
    177.62x = 244.78 × 142.38
  4. Step 4: Simplify right side
    177.62x = 34,851.78
  5. Step 5: Solve for x
    x = 34,851.78/177.62
  6. Step 6: Final answer
    x = 196.22

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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.