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Finding the Fourth Proportional to 98.35, 136.33 and 96.99

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Solution

The fourth proportional to 98.35, 136.33 and 96.99 is: 134.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    98.35 : 136.33 = 96.99 : x
  2. Step 2: Convert to fraction form
    98.35/136.33 = 96.99/x
  3. Step 3: Cross multiply
    98.35x = 136.33 × 96.99
  4. Step 4: Simplify right side
    98.35x = 13,222.65
  5. Step 5: Solve for x
    x = 13,222.65/98.35
  6. Step 6: Final answer
    x = 134.44

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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.