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Finding the Fourth Proportional to 395.80, 593.83 and 187.66

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Solution

The fourth proportional to 395.80, 593.83 and 187.66 is: 281.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.80 : 593.83 = 187.66 : x
  2. Step 2: Convert to fraction form
    395.80/593.83 = 187.66/x
  3. Step 3: Cross multiply
    395.80x = 593.83 × 187.66
  4. Step 4: Simplify right side
    395.80x = 111,435.17
  5. Step 5: Solve for x
    x = 111,435.17/395.80
  6. Step 6: Final answer
    x = 281.54

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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.