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Finding the Fourth Proportional to 141.44, 210.72 and 132.60

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Solution

The fourth proportional to 141.44, 210.72 and 132.60 is: 197.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.44 : 210.72 = 132.60 : x
  2. Step 2: Convert to fraction form
    141.44/210.72 = 132.60/x
  3. Step 3: Cross multiply
    141.44x = 210.72 × 132.60
  4. Step 4: Simplify right side
    141.44x = 27,941.47
  5. Step 5: Solve for x
    x = 27,941.47/141.44
  6. Step 6: Final answer
    x = 197.55

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.