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Finding the Fourth Proportional to 415.36, 573.22 and 228.88

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Solution

The fourth proportional to 415.36, 573.22 and 228.88 is: 315.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    415.36 : 573.22 = 228.88 : x
  2. Step 2: Convert to fraction form
    415.36/573.22 = 228.88/x
  3. Step 3: Cross multiply
    415.36x = 573.22 × 228.88
  4. Step 4: Simplify right side
    415.36x = 131,198.59
  5. Step 5: Solve for x
    x = 131,198.59/415.36
  6. Step 6: Final answer
    x = 315.87

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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.