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Finding the Fourth Proportional to 394.34, 593.72 and 286.88

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Solution

The fourth proportional to 394.34, 593.72 and 286.88 is: 431.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.34 : 593.72 = 286.88 : x
  2. Step 2: Convert to fraction form
    394.34/593.72 = 286.88/x
  3. Step 3: Cross multiply
    394.34x = 593.72 × 286.88
  4. Step 4: Simplify right side
    394.34x = 170,326.39
  5. Step 5: Solve for x
    x = 170,326.39/394.34
  6. Step 6: Final answer
    x = 431.93

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.