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Finding the Fourth Proportional to 181.90, 250.97 and 154.01

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Solution

The fourth proportional to 181.90, 250.97 and 154.01 is: 212.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.90 : 250.97 = 154.01 : x
  2. Step 2: Convert to fraction form
    181.90/250.97 = 154.01/x
  3. Step 3: Cross multiply
    181.90x = 250.97 × 154.01
  4. Step 4: Simplify right side
    181.90x = 38,651.75
  5. Step 5: Solve for x
    x = 38,651.75/181.90
  6. Step 6: Final answer
    x = 212.49

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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.