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Finding the Fourth Proportional to 445.89, 615.39 and 268.92

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Solution

The fourth proportional to 445.89, 615.39 and 268.92 is: 371.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.89 : 615.39 = 268.92 : x
  2. Step 2: Convert to fraction form
    445.89/615.39 = 268.92/x
  3. Step 3: Cross multiply
    445.89x = 615.39 × 268.92
  4. Step 4: Simplify right side
    445.89x = 165,490.68
  5. Step 5: Solve for x
    x = 165,490.68/445.89
  6. Step 6: Final answer
    x = 371.15

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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.