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Finding the Fourth Proportional to 190.40, 262.67 and 116.69

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Solution

The fourth proportional to 190.40, 262.67 and 116.69 is: 160.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.40 : 262.67 = 116.69 : x
  2. Step 2: Convert to fraction form
    190.40/262.67 = 116.69/x
  3. Step 3: Cross multiply
    190.40x = 262.67 × 116.69
  4. Step 4: Simplify right side
    190.40x = 30,649.07
  5. Step 5: Solve for x
    x = 30,649.07/190.40
  6. Step 6: Final answer
    x = 160.98

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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.