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Finding the Fourth Proportional to 190.90, 286.67 and 181.16

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Solution

The fourth proportional to 190.90, 286.67 and 181.16 is: 272.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.90 : 286.67 = 181.16 : x
  2. Step 2: Convert to fraction form
    190.90/286.67 = 181.16/x
  3. Step 3: Cross multiply
    190.90x = 286.67 × 181.16
  4. Step 4: Simplify right side
    190.90x = 51,930.80
  5. Step 5: Solve for x
    x = 51,930.80/190.90
  6. Step 6: Final answer
    x = 272.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.