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Finding the Fourth Proportional to 98.98, 134.87 and 96.76

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Solution

The fourth proportional to 98.98, 134.87 and 96.76 is: 131.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    98.98 : 134.87 = 96.76 : x
  2. Step 2: Convert to fraction form
    98.98/134.87 = 96.76/x
  3. Step 3: Cross multiply
    98.98x = 134.87 × 96.76
  4. Step 4: Simplify right side
    98.98x = 13,050.02
  5. Step 5: Solve for x
    x = 13,050.02/98.98
  6. Step 6: Final answer
    x = 131.85

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.