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Finding the Fourth Proportional to 412.56, 619.20 and 332.28

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Solution

The fourth proportional to 412.56, 619.20 and 332.28 is: 498.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    412.56 : 619.20 = 332.28 : x
  2. Step 2: Convert to fraction form
    412.56/619.20 = 332.28/x
  3. Step 3: Cross multiply
    412.56x = 619.20 × 332.28
  4. Step 4: Simplify right side
    412.56x = 205,747.78
  5. Step 5: Solve for x
    x = 205,747.78/412.56
  6. Step 6: Final answer
    x = 498.71

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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.