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Finding the Fourth Proportional to 445.95, 671.52 and 331.22

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Solution

The fourth proportional to 445.95, 671.52 and 331.22 is: 498.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.95 : 671.52 = 331.22 : x
  2. Step 2: Convert to fraction form
    445.95/671.52 = 331.22/x
  3. Step 3: Cross multiply
    445.95x = 671.52 × 331.22
  4. Step 4: Simplify right side
    445.95x = 222,417.50
  5. Step 5: Solve for x
    x = 222,417.50/445.95
  6. Step 6: Final answer
    x = 498.75

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.