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Finding the Fourth Proportional to 172.25, 237.43 and 134.84

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Solution

The fourth proportional to 172.25, 237.43 and 134.84 is: 185.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    172.25 : 237.43 = 134.84 : x
  2. Step 2: Convert to fraction form
    172.25/237.43 = 134.84/x
  3. Step 3: Cross multiply
    172.25x = 237.43 × 134.84
  4. Step 4: Simplify right side
    172.25x = 32,013.73
  5. Step 5: Solve for x
    x = 32,013.73/172.25
  6. Step 6: Final answer
    x = 185.86

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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.