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Finding the Fourth Proportional to 171.96, 256.53 and 141.43

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Solution

The fourth proportional to 171.96, 256.53 and 141.43 is: 210.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.96 : 256.53 = 141.43 : x
  2. Step 2: Convert to fraction form
    171.96/256.53 = 141.43/x
  3. Step 3: Cross multiply
    171.96x = 256.53 × 141.43
  4. Step 4: Simplify right side
    171.96x = 36,281.41
  5. Step 5: Solve for x
    x = 36,281.41/171.96
  6. Step 6: Final answer
    x = 210.99

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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.