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Finding the Fourth Proportional to 395.60, 594.68 and 393.68

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Solution

The fourth proportional to 395.60, 594.68 and 393.68 is: 591.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.60 : 594.68 = 393.68 : x
  2. Step 2: Convert to fraction form
    395.60/594.68 = 393.68/x
  3. Step 3: Cross multiply
    395.60x = 594.68 × 393.68
  4. Step 4: Simplify right side
    395.60x = 234,113.62
  5. Step 5: Solve for x
    x = 234,113.62/395.60
  6. Step 6: Final answer
    x = 591.79

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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.