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Finding the Fourth Proportional to 283.57, 391.10 and 190.25

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Solution

The fourth proportional to 283.57, 391.10 and 190.25 is: 262.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.57 : 391.10 = 190.25 : x
  2. Step 2: Convert to fraction form
    283.57/391.10 = 190.25/x
  3. Step 3: Cross multiply
    283.57x = 391.10 × 190.25
  4. Step 4: Simplify right side
    283.57x = 74,405.33
  5. Step 5: Solve for x
    x = 74,405.33/283.57
  6. Step 6: Final answer
    x = 262.39

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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.