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Finding the Fourth Proportional to 192.55, 288.51 and 120.26

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Solution

The fourth proportional to 192.55, 288.51 and 120.26 is: 180.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.55 : 288.51 = 120.26 : x
  2. Step 2: Convert to fraction form
    192.55/288.51 = 120.26/x
  3. Step 3: Cross multiply
    192.55x = 288.51 × 120.26
  4. Step 4: Simplify right side
    192.55x = 34,696.21
  5. Step 5: Solve for x
    x = 34,696.21/192.55
  6. Step 6: Final answer
    x = 180.19

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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.