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Finding the Fourth Proportional to 170.58, 255.59 and 89.44

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Solution

The fourth proportional to 170.58, 255.59 and 89.44 is: 134.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.58 : 255.59 = 89.44 : x
  2. Step 2: Convert to fraction form
    170.58/255.59 = 89.44/x
  3. Step 3: Cross multiply
    170.58x = 255.59 × 89.44
  4. Step 4: Simplify right side
    170.58x = 22,859.97
  5. Step 5: Solve for x
    x = 22,859.97/170.58
  6. Step 6: Final answer
    x = 134.01

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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.