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Finding the Fourth Proportional to 445.94, 615.51 and 271.25

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Solution

The fourth proportional to 445.94, 615.51 and 271.25 is: 374.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.94 : 615.51 = 271.25 : x
  2. Step 2: Convert to fraction form
    445.94/615.51 = 271.25/x
  3. Step 3: Cross multiply
    445.94x = 615.51 × 271.25
  4. Step 4: Simplify right side
    445.94x = 166,957.09
  5. Step 5: Solve for x
    x = 166,957.09/445.94
  6. Step 6: Final answer
    x = 374.39

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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.