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Finding the Fourth Proportional to 190.69, 263.12 and 116.98

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Solution

The fourth proportional to 190.69, 263.12 and 116.98 is: 161.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.69 : 263.12 = 116.98 : x
  2. Step 2: Convert to fraction form
    190.69/263.12 = 116.98/x
  3. Step 3: Cross multiply
    190.69x = 263.12 × 116.98
  4. Step 4: Simplify right side
    190.69x = 30,778.53
  5. Step 5: Solve for x
    x = 30,778.53/190.69
  6. Step 6: Final answer
    x = 161.41

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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.