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Finding the Fourth Proportional to 190.72, 262.73 and 170.92

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Solution

The fourth proportional to 190.72, 262.73 and 170.92 is: 235.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.72 : 262.73 = 170.92 : x
  2. Step 2: Convert to fraction form
    190.72/262.73 = 170.92/x
  3. Step 3: Cross multiply
    190.72x = 262.73 × 170.92
  4. Step 4: Simplify right side
    190.72x = 44,905.81
  5. Step 5: Solve for x
    x = 44,905.81/190.72
  6. Step 6: Final answer
    x = 235.45

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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.