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Finding the Fourth Proportional to 174.37, 240.56 and 121.82

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Solution

The fourth proportional to 174.37, 240.56 and 121.82 is: 168.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.37 : 240.56 = 121.82 : x
  2. Step 2: Convert to fraction form
    174.37/240.56 = 121.82/x
  3. Step 3: Cross multiply
    174.37x = 240.56 × 121.82
  4. Step 4: Simplify right side
    174.37x = 29,305.02
  5. Step 5: Solve for x
    x = 29,305.02/174.37
  6. Step 6: Final answer
    x = 168.06

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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.