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Finding the Fourth Proportional to 450.91, 621.82 and 273.90

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Solution

The fourth proportional to 450.91, 621.82 and 273.90 is: 377.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.91 : 621.82 = 273.90 : x
  2. Step 2: Convert to fraction form
    450.91/621.82 = 273.90/x
  3. Step 3: Cross multiply
    450.91x = 621.82 × 273.90
  4. Step 4: Simplify right side
    450.91x = 170,314.13
  5. Step 5: Solve for x
    x = 170,314.13/450.91
  6. Step 6: Final answer
    x = 377.71

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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.