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Finding the Fourth Proportional to 169.99, 255.04 and 54.43

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Solution

The fourth proportional to 169.99, 255.04 and 54.43 is: 81.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.99 : 255.04 = 54.43 : x
  2. Step 2: Convert to fraction form
    169.99/255.04 = 54.43/x
  3. Step 3: Cross multiply
    169.99x = 255.04 × 54.43
  4. Step 4: Simplify right side
    169.99x = 13,881.05
  5. Step 5: Solve for x
    x = 13,881.05/169.99
  6. Step 6: Final answer
    x = 81.66

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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.