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Finding the Fourth Proportional to 449.73, 620.60 and 272.73

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Solution

The fourth proportional to 449.73, 620.60 and 272.73 is: 376.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.73 : 620.60 = 272.73 : x
  2. Step 2: Convert to fraction form
    449.73/620.60 = 272.73/x
  3. Step 3: Cross multiply
    449.73x = 620.60 × 272.73
  4. Step 4: Simplify right side
    449.73x = 169,256.24
  5. Step 5: Solve for x
    x = 169,256.24/449.73
  6. Step 6: Final answer
    x = 376.35

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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.