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Finding the Fourth Proportional to 171.32, 255.70 and 150.81

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Solution

The fourth proportional to 171.32, 255.70 and 150.81 is: 225.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.32 : 255.70 = 150.81 : x
  2. Step 2: Convert to fraction form
    171.32/255.70 = 150.81/x
  3. Step 3: Cross multiply
    171.32x = 255.70 × 150.81
  4. Step 4: Simplify right side
    171.32x = 38,562.68
  5. Step 5: Solve for x
    x = 38,562.68/171.32
  6. Step 6: Final answer
    x = 225.10

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.