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Finding the Fourth Proportional to 190.16, 261.86 and 169.56

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Solution

The fourth proportional to 190.16, 261.86 and 169.56 is: 233.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.16 : 261.86 = 169.56 : x
  2. Step 2: Convert to fraction form
    190.16/261.86 = 169.56/x
  3. Step 3: Cross multiply
    190.16x = 261.86 × 169.56
  4. Step 4: Simplify right side
    190.16x = 44,400.98
  5. Step 5: Solve for x
    x = 44,400.98/190.16
  6. Step 6: Final answer
    x = 233.49

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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.