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Finding the Fourth Proportional to 117.59, 177.26 and 115.97

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Solution

The fourth proportional to 117.59, 177.26 and 115.97 is: 174.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.59 : 177.26 = 115.97 : x
  2. Step 2: Convert to fraction form
    117.59/177.26 = 115.97/x
  3. Step 3: Cross multiply
    117.59x = 177.26 × 115.97
  4. Step 4: Simplify right side
    117.59x = 20,555.38
  5. Step 5: Solve for x
    x = 20,555.38/117.59
  6. Step 6: Final answer
    x = 174.81

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.