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Finding the Fourth Proportional to 360.69, 497.57 and 273.21

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Solution

The fourth proportional to 360.69, 497.57 and 273.21 is: 376.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.69 : 497.57 = 273.21 : x
  2. Step 2: Convert to fraction form
    360.69/497.57 = 273.21/x
  3. Step 3: Cross multiply
    360.69x = 497.57 × 273.21
  4. Step 4: Simplify right side
    360.69x = 135,939.73
  5. Step 5: Solve for x
    x = 135,939.73/360.69
  6. Step 6: Final answer
    x = 376.89

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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.