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Finding the Fourth Proportional to 254.47, 351.29 and 171.62

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Solution

The fourth proportional to 254.47, 351.29 and 171.62 is: 236.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.47 : 351.29 = 171.62 : x
  2. Step 2: Convert to fraction form
    254.47/351.29 = 171.62/x
  3. Step 3: Cross multiply
    254.47x = 351.29 × 171.62
  4. Step 4: Simplify right side
    254.47x = 60,287.41
  5. Step 5: Solve for x
    x = 60,287.41/254.47
  6. Step 6: Final answer
    x = 236.92

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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.