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Finding the Fourth Proportional to 362.86, 544.30 and 143.56

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Solution

The fourth proportional to 362.86, 544.30 and 143.56 is: 215.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    362.86 : 544.30 = 143.56 : x
  2. Step 2: Convert to fraction form
    362.86/544.30 = 143.56/x
  3. Step 3: Cross multiply
    362.86x = 544.30 × 143.56
  4. Step 4: Simplify right side
    362.86x = 78,137.38
  5. Step 5: Solve for x
    x = 78,137.38/362.86
  6. Step 6: Final answer
    x = 215.33

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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.