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Finding the Fourth Proportional to 181.01, 271.04 and 99.65

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Solution

The fourth proportional to 181.01, 271.04 and 99.65 is: 149.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.01 : 271.04 = 99.65 : x
  2. Step 2: Convert to fraction form
    181.01/271.04 = 99.65/x
  3. Step 3: Cross multiply
    181.01x = 271.04 × 99.65
  4. Step 4: Simplify right side
    181.01x = 27,007.28
  5. Step 5: Solve for x
    x = 27,007.28/181.01
  6. Step 6: Final answer
    x = 149.21

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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.