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Finding the Fourth Proportional to 170.68, 235.80 and 126.94

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Solution

The fourth proportional to 170.68, 235.80 and 126.94 is: 175.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.68 : 235.80 = 126.94 : x
  2. Step 2: Convert to fraction form
    170.68/235.80 = 126.94/x
  3. Step 3: Cross multiply
    170.68x = 235.80 × 126.94
  4. Step 4: Simplify right side
    170.68x = 29,932.45
  5. Step 5: Solve for x
    x = 29,932.45/170.68
  6. Step 6: Final answer
    x = 175.37

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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.