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Finding the Fourth Proportional to 414.58, 572.08 and 228.05

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Solution

The fourth proportional to 414.58, 572.08 and 228.05 is: 314.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    414.58 : 572.08 = 228.05 : x
  2. Step 2: Convert to fraction form
    414.58/572.08 = 228.05/x
  3. Step 3: Cross multiply
    414.58x = 572.08 × 228.05
  4. Step 4: Simplify right side
    414.58x = 130,463.44
  5. Step 5: Solve for x
    x = 130,463.44/414.58
  6. Step 6: Final answer
    x = 314.69

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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.