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Finding the Fourth Proportional to 192.68, 290.60 and 190.64

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Solution

The fourth proportional to 192.68, 290.60 and 190.64 is: 287.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.68 : 290.60 = 190.64 : x
  2. Step 2: Convert to fraction form
    192.68/290.60 = 190.64/x
  3. Step 3: Cross multiply
    192.68x = 290.60 × 190.64
  4. Step 4: Simplify right side
    192.68x = 55,399.98
  5. Step 5: Solve for x
    x = 55,399.98/192.68
  6. Step 6: Final answer
    x = 287.52

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.