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Finding the Fourth Proportional to 192.79, 288.90 and 124.27

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Solution

The fourth proportional to 192.79, 288.90 and 124.27 is: 186.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.79 : 288.90 = 124.27 : x
  2. Step 2: Convert to fraction form
    192.79/288.90 = 124.27/x
  3. Step 3: Cross multiply
    192.79x = 288.90 × 124.27
  4. Step 4: Simplify right side
    192.79x = 35,900.16
  5. Step 5: Solve for x
    x = 35,900.16/192.79
  6. Step 6: Final answer
    x = 186.22

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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.