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Finding the Fourth Proportional to 190.39, 262.60 and 124.82

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Solution

The fourth proportional to 190.39, 262.60 and 124.82 is: 172.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.39 : 262.60 = 124.82 : x
  2. Step 2: Convert to fraction form
    190.39/262.60 = 124.82/x
  3. Step 3: Cross multiply
    190.39x = 262.60 × 124.82
  4. Step 4: Simplify right side
    190.39x = 32,777.73
  5. Step 5: Solve for x
    x = 32,777.73/190.39
  6. Step 6: Final answer
    x = 172.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.