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Finding the Fourth Proportional to 171.84, 256.11 and 170.41

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Solution

The fourth proportional to 171.84, 256.11 and 170.41 is: 253.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.84 : 256.11 = 170.41 : x
  2. Step 2: Convert to fraction form
    171.84/256.11 = 170.41/x
  3. Step 3: Cross multiply
    171.84x = 256.11 × 170.41
  4. Step 4: Simplify right side
    171.84x = 43,642.43
  5. Step 5: Solve for x
    x = 43,642.43/171.84
  6. Step 6: Final answer
    x = 253.97

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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.