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Finding the Fourth Proportional to 170.58, 235.17 and 126.84

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Solution

The fourth proportional to 170.58, 235.17 and 126.84 is: 174.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.58 : 235.17 = 126.84 : x
  2. Step 2: Convert to fraction form
    170.58/235.17 = 126.84/x
  3. Step 3: Cross multiply
    170.58x = 235.17 × 126.84
  4. Step 4: Simplify right side
    170.58x = 29,828.96
  5. Step 5: Solve for x
    x = 29,828.96/170.58
  6. Step 6: Final answer
    x = 174.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.