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Finding the Fourth Proportional to 414.94, 572.60 and 228.42

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Solution

The fourth proportional to 414.94, 572.60 and 228.42 is: 315.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    414.94 : 572.60 = 228.42 : x
  2. Step 2: Convert to fraction form
    414.94/572.60 = 228.42/x
  3. Step 3: Cross multiply
    414.94x = 572.60 × 228.42
  4. Step 4: Simplify right side
    414.94x = 130,793.58
  5. Step 5: Solve for x
    x = 130,793.58/414.94
  6. Step 6: Final answer
    x = 315.21

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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.