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Finding the Fourth Proportional to 171.43, 255.68 and 155.94

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Solution

The fourth proportional to 171.43, 255.68 and 155.94 is: 232.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.43 : 255.68 = 155.94 : x
  2. Step 2: Convert to fraction form
    171.43/255.68 = 155.94/x
  3. Step 3: Cross multiply
    171.43x = 255.68 × 155.94
  4. Step 4: Simplify right side
    171.43x = 39,869.59
  5. Step 5: Solve for x
    x = 39,869.59/171.43
  6. Step 6: Final answer
    x = 232.57

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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.