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Finding the Fourth Proportional to 177.62, 244.94 and 142.65

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Solution

The fourth proportional to 177.62, 244.94 and 142.65 is: 196.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.62 : 244.94 = 142.65 : x
  2. Step 2: Convert to fraction form
    177.62/244.94 = 142.65/x
  3. Step 3: Cross multiply
    177.62x = 244.94 × 142.65
  4. Step 4: Simplify right side
    177.62x = 34,940.69
  5. Step 5: Solve for x
    x = 34,940.69/177.62
  6. Step 6: Final answer
    x = 196.72

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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.