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Finding the Fourth Proportional to 445.56, 615 and 270.96

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Solution

The fourth proportional to 445.56, 615 and 270.96 is: 374.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.56 : 615 = 270.96 : x
  2. Step 2: Convert to fraction form
    445.56/615 = 270.96/x
  3. Step 3: Cross multiply
    445.56x = 615 × 270.96
  4. Step 4: Simplify right side
    445.56x = 166,640.40
  5. Step 5: Solve for x
    x = 166,640.40/445.56
  6. Step 6: Final answer
    x = 374.00

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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.