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Finding the Fourth Proportional to 190.56, 283.72 and 189.60

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Solution

The fourth proportional to 190.56, 283.72 and 189.60 is: 282.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.56 : 283.72 = 189.60 : x
  2. Step 2: Convert to fraction form
    190.56/283.72 = 189.60/x
  3. Step 3: Cross multiply
    190.56x = 283.72 × 189.60
  4. Step 4: Simplify right side
    190.56x = 53,793.31
  5. Step 5: Solve for x
    x = 53,793.31/190.56
  6. Step 6: Final answer
    x = 282.29

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.