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Finding the Fourth Proportional to 177.73, 245.22 and 107.80

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Solution

The fourth proportional to 177.73, 245.22 and 107.80 is: 148.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.73 : 245.22 = 107.80 : x
  2. Step 2: Convert to fraction form
    177.73/245.22 = 107.80/x
  3. Step 3: Cross multiply
    177.73x = 245.22 × 107.80
  4. Step 4: Simplify right side
    177.73x = 26,434.72
  5. Step 5: Solve for x
    x = 26,434.72/177.73
  6. Step 6: Final answer
    x = 148.74

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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.