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Finding the Fourth Proportional to 169.37, 254.51 and 115.60

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Solution

The fourth proportional to 169.37, 254.51 and 115.60 is: 173.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.37 : 254.51 = 115.60 : x
  2. Step 2: Convert to fraction form
    169.37/254.51 = 115.60/x
  3. Step 3: Cross multiply
    169.37x = 254.51 × 115.60
  4. Step 4: Simplify right side
    169.37x = 29,421.36
  5. Step 5: Solve for x
    x = 29,421.36/169.37
  6. Step 6: Final answer
    x = 173.71

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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.