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Finding the Fourth Proportional to 190.94, 286.20 and 88.29

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Solution

The fourth proportional to 190.94, 286.20 and 88.29 is: 132.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.94 : 286.20 = 88.29 : x
  2. Step 2: Convert to fraction form
    190.94/286.20 = 88.29/x
  3. Step 3: Cross multiply
    190.94x = 286.20 × 88.29
  4. Step 4: Simplify right side
    190.94x = 25,268.60
  5. Step 5: Solve for x
    x = 25,268.60/190.94
  6. Step 6: Final answer
    x = 132.34

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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.