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Finding the Fourth Proportional to 98.91, 137.32 and 95.94

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Solution

The fourth proportional to 98.91, 137.32 and 95.94 is: 133.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    98.91 : 137.32 = 95.94 : x
  2. Step 2: Convert to fraction form
    98.91/137.32 = 95.94/x
  3. Step 3: Cross multiply
    98.91x = 137.32 × 95.94
  4. Step 4: Simplify right side
    98.91x = 13,174.24
  5. Step 5: Solve for x
    x = 13,174.24/98.91
  6. Step 6: Final answer
    x = 133.19

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.