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Finding the Fourth Proportional to 177.81, 244.51 and 142.39

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Solution

The fourth proportional to 177.81, 244.51 and 142.39 is: 195.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.81 : 244.51 = 142.39 : x
  2. Step 2: Convert to fraction form
    177.81/244.51 = 142.39/x
  3. Step 3: Cross multiply
    177.81x = 244.51 × 142.39
  4. Step 4: Simplify right side
    177.81x = 34,815.78
  5. Step 5: Solve for x
    x = 34,815.78/177.81
  6. Step 6: Final answer
    x = 195.80

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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.