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Finding the Fourth Proportional to 99.02, 135.68 and 94.37

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Solution

The fourth proportional to 99.02, 135.68 and 94.37 is: 129.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    99.02 : 135.68 = 94.37 : x
  2. Step 2: Convert to fraction form
    99.02/135.68 = 94.37/x
  3. Step 3: Cross multiply
    99.02x = 135.68 × 94.37
  4. Step 4: Simplify right side
    99.02x = 12,802.97
  5. Step 5: Solve for x
    x = 12,802.97/99.02
  6. Step 6: Final answer
    x = 129.29

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.