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Finding the Fourth Proportional to 181.24, 271.10 and 139.65

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Solution

The fourth proportional to 181.24, 271.10 and 139.65 is: 208.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.24 : 271.10 = 139.65 : x
  2. Step 2: Convert to fraction form
    181.24/271.10 = 139.65/x
  3. Step 3: Cross multiply
    181.24x = 271.10 × 139.65
  4. Step 4: Simplify right side
    181.24x = 37,858.42
  5. Step 5: Solve for x
    x = 37,858.42/181.24
  6. Step 6: Final answer
    x = 208.89

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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.