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Finding the Fourth Proportional to 181.20, 272.60 and 169.84

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Solution

The fourth proportional to 181.20, 272.60 and 169.84 is: 255.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.20 : 272.60 = 169.84 : x
  2. Step 2: Convert to fraction form
    181.20/272.60 = 169.84/x
  3. Step 3: Cross multiply
    181.20x = 272.60 × 169.84
  4. Step 4: Simplify right side
    181.20x = 46,298.38
  5. Step 5: Solve for x
    x = 46,298.38/181.20
  6. Step 6: Final answer
    x = 255.51

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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.