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Finding the Fourth Proportional to 190.07, 262.31 and 134.79

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Solution

The fourth proportional to 190.07, 262.31 and 134.79 is: 186.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.07 : 262.31 = 134.79 : x
  2. Step 2: Convert to fraction form
    190.07/262.31 = 134.79/x
  3. Step 3: Cross multiply
    190.07x = 262.31 × 134.79
  4. Step 4: Simplify right side
    190.07x = 35,356.76
  5. Step 5: Solve for x
    x = 35,356.76/190.07
  6. Step 6: Final answer
    x = 186.02

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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.