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Finding the Fourth Proportional to 169.54, 233.96 and 99.59

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Solution

The fourth proportional to 169.54, 233.96 and 99.59 is: 137.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.54 : 233.96 = 99.59 : x
  2. Step 2: Convert to fraction form
    169.54/233.96 = 99.59/x
  3. Step 3: Cross multiply
    169.54x = 233.96 × 99.59
  4. Step 4: Simplify right side
    169.54x = 23,299.86
  5. Step 5: Solve for x
    x = 23,299.86/169.54
  6. Step 6: Final answer
    x = 137.43

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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.