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Finding the Fourth Proportional to 239.43, 330.66 and 181.11

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Solution

The fourth proportional to 239.43, 330.66 and 181.11 is: 250.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.43 : 330.66 = 181.11 : x
  2. Step 2: Convert to fraction form
    239.43/330.66 = 181.11/x
  3. Step 3: Cross multiply
    239.43x = 330.66 × 181.11
  4. Step 4: Simplify right side
    239.43x = 59,885.83
  5. Step 5: Solve for x
    x = 59,885.83/239.43
  6. Step 6: Final answer
    x = 250.12

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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.