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Finding the Fourth Proportional to 213.85, 295.31 and 190.54

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Solution

The fourth proportional to 213.85, 295.31 and 190.54 is: 263.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    213.85 : 295.31 = 190.54 : x
  2. Step 2: Convert to fraction form
    213.85/295.31 = 190.54/x
  3. Step 3: Cross multiply
    213.85x = 295.31 × 190.54
  4. Step 4: Simplify right side
    213.85x = 56,268.37
  5. Step 5: Solve for x
    x = 56,268.37/213.85
  6. Step 6: Final answer
    x = 263.12

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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.