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Finding the Fourth Proportional to 181.38, 250.23 and 107.69

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Solution

The fourth proportional to 181.38, 250.23 and 107.69 is: 148.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.38 : 250.23 = 107.69 : x
  2. Step 2: Convert to fraction form
    181.38/250.23 = 107.69/x
  3. Step 3: Cross multiply
    181.38x = 250.23 × 107.69
  4. Step 4: Simplify right side
    181.38x = 26,946.02
  5. Step 5: Solve for x
    x = 26,946.02/181.38
  6. Step 6: Final answer
    x = 148.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.