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Finding the Fourth Proportional to 362.81, 544.30 and 131.72

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Solution

The fourth proportional to 362.81, 544.30 and 131.72 is: 197.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    362.81 : 544.30 = 131.72 : x
  2. Step 2: Convert to fraction form
    362.81/544.30 = 131.72/x
  3. Step 3: Cross multiply
    362.81x = 544.30 × 131.72
  4. Step 4: Simplify right side
    362.81x = 71,695.20
  5. Step 5: Solve for x
    x = 71,695.20/362.81
  6. Step 6: Final answer
    x = 197.61

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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.