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Finding the Fourth Proportional to 362.90, 544.21 and 131.72

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Solution

The fourth proportional to 362.90, 544.21 and 131.72 is: 197.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    362.90 : 544.21 = 131.72 : x
  2. Step 2: Convert to fraction form
    362.90/544.21 = 131.72/x
  3. Step 3: Cross multiply
    362.90x = 544.21 × 131.72
  4. Step 4: Simplify right side
    362.90x = 71,683.34
  5. Step 5: Solve for x
    x = 71,683.34/362.90
  6. Step 6: Final answer
    x = 197.53

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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.