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Finding the Fourth Proportional to 283.89, 393.58 and 273.86

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Solution

The fourth proportional to 283.89, 393.58 and 273.86 is: 379.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.89 : 393.58 = 273.86 : x
  2. Step 2: Convert to fraction form
    283.89/393.58 = 273.86/x
  3. Step 3: Cross multiply
    283.89x = 393.58 × 273.86
  4. Step 4: Simplify right side
    283.89x = 107,784.45
  5. Step 5: Solve for x
    x = 107,784.45/283.89
  6. Step 6: Final answer
    x = 379.68

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.