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Finding the Fourth Proportional to 97.60, 146.44 and 54.22

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Solution

The fourth proportional to 97.60, 146.44 and 54.22 is: 81.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    97.60 : 146.44 = 54.22 : x
  2. Step 2: Convert to fraction form
    97.60/146.44 = 54.22/x
  3. Step 3: Cross multiply
    97.60x = 146.44 × 54.22
  4. Step 4: Simplify right side
    97.60x = 7,939.38
  5. Step 5: Solve for x
    x = 7,939.38/97.60
  6. Step 6: Final answer
    x = 81.35

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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.