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Finding the Fourth Proportional to 170.00, 234.26 and 120.79

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Solution

The fourth proportional to 170.00, 234.26 and 120.79 is: 166.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.00 : 234.26 = 120.79 : x
  2. Step 2: Convert to fraction form
    170.00/234.26 = 120.79/x
  3. Step 3: Cross multiply
    170.00x = 234.26 × 120.79
  4. Step 4: Simplify right side
    170.00x = 28,295.08
  5. Step 5: Solve for x
    x = 28,295.08/170.00
  6. Step 6: Final answer
    x = 166.45

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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.