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Finding the Fourth Proportional to 181.98, 250.54 and 154.30

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Solution

The fourth proportional to 181.98, 250.54 and 154.30 is: 212.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.98 : 250.54 = 154.30 : x
  2. Step 2: Convert to fraction form
    181.98/250.54 = 154.30/x
  3. Step 3: Cross multiply
    181.98x = 250.54 × 154.30
  4. Step 4: Simplify right side
    181.98x = 38,658.32
  5. Step 5: Solve for x
    x = 38,658.32/181.98
  6. Step 6: Final answer
    x = 212.43

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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.