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Finding the Fourth Proportional to 485.11, 727.08 and 224.76

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Solution

The fourth proportional to 485.11, 727.08 and 224.76 is: 336.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    485.11 : 727.08 = 224.76 : x
  2. Step 2: Convert to fraction form
    485.11/727.08 = 224.76/x
  3. Step 3: Cross multiply
    485.11x = 727.08 × 224.76
  4. Step 4: Simplify right side
    485.11x = 163,414.87
  5. Step 5: Solve for x
    x = 163,414.87/485.11
  6. Step 6: Final answer
    x = 336.86

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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.