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Finding the Fourth Proportional to 445.50, 615.09 and 271.15

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Solution

The fourth proportional to 445.50, 615.09 and 271.15 is: 374.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.50 : 615.09 = 271.15 : x
  2. Step 2: Convert to fraction form
    445.50/615.09 = 271.15/x
  3. Step 3: Cross multiply
    445.50x = 615.09 × 271.15
  4. Step 4: Simplify right side
    445.50x = 166,781.13
  5. Step 5: Solve for x
    x = 166,781.13/445.50
  6. Step 6: Final answer
    x = 374.37

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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.