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Finding the Fourth Proportional to 219.13, 330.19 and 181.44

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Solution

The fourth proportional to 219.13, 330.19 and 181.44 is: 273.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    219.13 : 330.19 = 181.44 : x
  2. Step 2: Convert to fraction form
    219.13/330.19 = 181.44/x
  3. Step 3: Cross multiply
    219.13x = 330.19 × 181.44
  4. Step 4: Simplify right side
    219.13x = 59,909.67
  5. Step 5: Solve for x
    x = 59,909.67/219.13
  6. Step 6: Final answer
    x = 273.40

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.