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Finding the Fourth Proportional to 467.87, 645.92 and 328.41

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Solution

The fourth proportional to 467.87, 645.92 and 328.41 is: 453.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    467.87 : 645.92 = 328.41 : x
  2. Step 2: Convert to fraction form
    467.87/645.92 = 328.41/x
  3. Step 3: Cross multiply
    467.87x = 645.92 × 328.41
  4. Step 4: Simplify right side
    467.87x = 212,124.95
  5. Step 5: Solve for x
    x = 212,124.95/467.87
  6. Step 6: Final answer
    x = 453.39

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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.