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Finding the Fourth Proportional to 98.21, 146.51 and 94.97

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Solution

The fourth proportional to 98.21, 146.51 and 94.97 is: 141.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    98.21 : 146.51 = 94.97 : x
  2. Step 2: Convert to fraction form
    98.21/146.51 = 94.97/x
  3. Step 3: Cross multiply
    98.21x = 146.51 × 94.97
  4. Step 4: Simplify right side
    98.21x = 13,914.30
  5. Step 5: Solve for x
    x = 13,914.30/98.21
  6. Step 6: Final answer
    x = 141.68

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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.