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Finding the Fourth Proportional to 394.08, 594.93 and 391.92

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Solution

The fourth proportional to 394.08, 594.93 and 391.92 is: 591.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.08 : 594.93 = 391.92 : x
  2. Step 2: Convert to fraction form
    394.08/594.93 = 391.92/x
  3. Step 3: Cross multiply
    394.08x = 594.93 × 391.92
  4. Step 4: Simplify right side
    394.08x = 233,164.97
  5. Step 5: Solve for x
    x = 233,164.97/394.08
  6. Step 6: Final answer
    x = 591.67

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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.