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Finding the Fourth Proportional to 574.72, 862.55 and 228.29

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Solution

The fourth proportional to 574.72, 862.55 and 228.29 is: 342.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.72 : 862.55 = 228.29 : x
  2. Step 2: Convert to fraction form
    574.72/862.55 = 228.29/x
  3. Step 3: Cross multiply
    574.72x = 862.55 × 228.29
  4. Step 4: Simplify right side
    574.72x = 196,911.54
  5. Step 5: Solve for x
    x = 196,911.54/574.72
  6. Step 6: Final answer
    x = 342.62

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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.