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Finding the Fourth Proportional to 174.15, 238.34 and 172.33

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Solution

The fourth proportional to 174.15, 238.34 and 172.33 is: 235.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.15 : 238.34 = 172.33 : x
  2. Step 2: Convert to fraction form
    174.15/238.34 = 172.33/x
  3. Step 3: Cross multiply
    174.15x = 238.34 × 172.33
  4. Step 4: Simplify right side
    174.15x = 41,072.97
  5. Step 5: Solve for x
    x = 41,072.97/174.15
  6. Step 6: Final answer
    x = 235.85

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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.