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Finding the Fourth Proportional to 170.88, 235.91 and 107.94

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Solution

The fourth proportional to 170.88, 235.91 and 107.94 is: 149.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.88 : 235.91 = 107.94 : x
  2. Step 2: Convert to fraction form
    170.88/235.91 = 107.94/x
  3. Step 3: Cross multiply
    170.88x = 235.91 × 107.94
  4. Step 4: Simplify right side
    170.88x = 25,465.28
  5. Step 5: Solve for x
    x = 25,465.28/170.88
  6. Step 6: Final answer
    x = 149.03

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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.