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Finding the Fourth Proportional to 94.76, 141.44 and 84.60

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Solution

The fourth proportional to 94.76, 141.44 and 84.60 is: 126.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.76 : 141.44 = 84.60 : x
  2. Step 2: Convert to fraction form
    94.76/141.44 = 84.60/x
  3. Step 3: Cross multiply
    94.76x = 141.44 × 84.60
  4. Step 4: Simplify right side
    94.76x = 11,965.82
  5. Step 5: Solve for x
    x = 11,965.82/94.76
  6. Step 6: Final answer
    x = 126.28

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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.