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Finding the Fourth Proportional to 362.78, 544.12 and 143.37

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Solution

The fourth proportional to 362.78, 544.12 and 143.37 is: 215.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    362.78 : 544.12 = 143.37 : x
  2. Step 2: Convert to fraction form
    362.78/544.12 = 143.37/x
  3. Step 3: Cross multiply
    362.78x = 544.12 × 143.37
  4. Step 4: Simplify right side
    362.78x = 78,010.13
  5. Step 5: Solve for x
    x = 78,010.13/362.78
  6. Step 6: Final answer
    x = 215.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.