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Finding the Fourth Proportional to 836.07, 1,254.08 and 219.81

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Solution

The fourth proportional to 836.07, 1,254.08 and 219.81 is: 329.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    836.07 : 1,254.08 = 219.81 : x
  2. Step 2: Convert to fraction form
    836.07/1,254.08 = 219.81/x
  3. Step 3: Cross multiply
    836.07x = 1,254.08 × 219.81
  4. Step 4: Simplify right side
    836.07x = 275,664.58
  5. Step 5: Solve for x
    x = 275,664.58/836.07
  6. Step 6: Final answer
    x = 329.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.