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Finding the Fourth Proportional to 181.20, 270.12 and 167.16

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Solution

The fourth proportional to 181.20, 270.12 and 167.16 is: 249.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.20 : 270.12 = 167.16 : x
  2. Step 2: Convert to fraction form
    181.20/270.12 = 167.16/x
  3. Step 3: Cross multiply
    181.20x = 270.12 × 167.16
  4. Step 4: Simplify right side
    181.20x = 45,153.26
  5. Step 5: Solve for x
    x = 45,153.26/181.20
  6. Step 6: Final answer
    x = 249.19

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.