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Finding the Fourth Proportional to 171.33, 258.01 and 155.26

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Solution

The fourth proportional to 171.33, 258.01 and 155.26 is: 233.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.33 : 258.01 = 155.26 : x
  2. Step 2: Convert to fraction form
    171.33/258.01 = 155.26/x
  3. Step 3: Cross multiply
    171.33x = 258.01 × 155.26
  4. Step 4: Simplify right side
    171.33x = 40,058.63
  5. Step 5: Solve for x
    x = 40,058.63/171.33
  6. Step 6: Final answer
    x = 233.81

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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.