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Finding the Fourth Proportional to 177.96, 243.80 and 171.80

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Solution

The fourth proportional to 177.96, 243.80 and 171.80 is: 235.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.96 : 243.80 = 171.80 : x
  2. Step 2: Convert to fraction form
    177.96/243.80 = 171.80/x
  3. Step 3: Cross multiply
    177.96x = 243.80 × 171.80
  4. Step 4: Simplify right side
    177.96x = 41,884.05
  5. Step 5: Solve for x
    x = 41,884.05/177.96
  6. Step 6: Final answer
    x = 235.36

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.