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Finding the Fourth Proportional to 171.88, 257.82 and 110.20

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Solution

The fourth proportional to 171.88, 257.82 and 110.20 is: 165.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.88 : 257.82 = 110.20 : x
  2. Step 2: Convert to fraction form
    171.88/257.82 = 110.20/x
  3. Step 3: Cross multiply
    171.88x = 257.82 × 110.20
  4. Step 4: Simplify right side
    171.88x = 28,411.76
  5. Step 5: Solve for x
    x = 28,411.76/171.88
  6. Step 6: Final answer
    x = 165.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.