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Finding the Fourth Proportional to 412.46, 569.20 and 225.96

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Solution

The fourth proportional to 412.46, 569.20 and 225.96 is: 311.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    412.46 : 569.20 = 225.96 : x
  2. Step 2: Convert to fraction form
    412.46/569.20 = 225.96/x
  3. Step 3: Cross multiply
    412.46x = 569.20 × 225.96
  4. Step 4: Simplify right side
    412.46x = 128,618.32
  5. Step 5: Solve for x
    x = 128,618.32/412.46
  6. Step 6: Final answer
    x = 311.83

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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.