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Finding the Fourth Proportional to 192.68, 288.97 and 55.70

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Solution

The fourth proportional to 192.68, 288.97 and 55.70 is: 83.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.68 : 288.97 = 55.70 : x
  2. Step 2: Convert to fraction form
    192.68/288.97 = 55.70/x
  3. Step 3: Cross multiply
    192.68x = 288.97 × 55.70
  4. Step 4: Simplify right side
    192.68x = 16,096.75
  5. Step 5: Solve for x
    x = 16,096.75/192.68
  6. Step 6: Final answer
    x = 83.54

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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.