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Finding the Fourth Proportional to 171.25, 236.33 and 93.63

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Solution

The fourth proportional to 171.25, 236.33 and 93.63 is: 129.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.25 : 236.33 = 93.63 : x
  2. Step 2: Convert to fraction form
    171.25/236.33 = 93.63/x
  3. Step 3: Cross multiply
    171.25x = 236.33 × 93.63
  4. Step 4: Simplify right side
    171.25x = 22,127.58
  5. Step 5: Solve for x
    x = 22,127.58/171.25
  6. Step 6: Final answer
    x = 129.21

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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.