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Finding the Fourth Proportional to 177.74, 244.75 and 140.78

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Solution

The fourth proportional to 177.74, 244.75 and 140.78 is: 193.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.74 : 244.75 = 140.78 : x
  2. Step 2: Convert to fraction form
    177.74/244.75 = 140.78/x
  3. Step 3: Cross multiply
    177.74x = 244.75 × 140.78
  4. Step 4: Simplify right side
    177.74x = 34,455.91
  5. Step 5: Solve for x
    x = 34,455.91/177.74
  6. Step 6: Final answer
    x = 193.86

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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.