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Finding the Fourth Proportional to 96.37, 133.28 and 84.70

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Solution

The fourth proportional to 96.37, 133.28 and 84.70 is: 117.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.37 : 133.28 = 84.70 : x
  2. Step 2: Convert to fraction form
    96.37/133.28 = 84.70/x
  3. Step 3: Cross multiply
    96.37x = 133.28 × 84.70
  4. Step 4: Simplify right side
    96.37x = 11,288.82
  5. Step 5: Solve for x
    x = 11,288.82/96.37
  6. Step 6: Final answer
    x = 117.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.