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Finding the Fourth Proportional to 99.04, 137.28 and 97.67

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Solution

The fourth proportional to 99.04, 137.28 and 97.67 is: 135.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    99.04 : 137.28 = 97.67 : x
  2. Step 2: Convert to fraction form
    99.04/137.28 = 97.67/x
  3. Step 3: Cross multiply
    99.04x = 137.28 × 97.67
  4. Step 4: Simplify right side
    99.04x = 13,408.30
  5. Step 5: Solve for x
    x = 13,408.30/99.04
  6. Step 6: Final answer
    x = 135.38

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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.