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Finding the Fourth Proportional to 192.77, 289.13 and 69.37

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Solution

The fourth proportional to 192.77, 289.13 and 69.37 is: 104.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.77 : 289.13 = 69.37 : x
  2. Step 2: Convert to fraction form
    192.77/289.13 = 69.37/x
  3. Step 3: Cross multiply
    192.77x = 289.13 × 69.37
  4. Step 4: Simplify right side
    192.77x = 20,056.95
  5. Step 5: Solve for x
    x = 20,056.95/192.77
  6. Step 6: Final answer
    x = 104.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.