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Finding the Fourth Proportional to 287.89, 397.24 and 273.29

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Solution

The fourth proportional to 287.89, 397.24 and 273.29 is: 377.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    287.89 : 397.24 = 273.29 : x
  2. Step 2: Convert to fraction form
    287.89/397.24 = 273.29/x
  3. Step 3: Cross multiply
    287.89x = 397.24 × 273.29
  4. Step 4: Simplify right side
    287.89x = 108,563.29
  5. Step 5: Solve for x
    x = 108,563.29/287.89
  6. Step 6: Final answer
    x = 377.10

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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.