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Finding the Fourth Proportional to 391.92, 590.83 and 365.50

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Solution

The fourth proportional to 391.92, 590.83 and 365.50 is: 550.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    391.92 : 590.83 = 365.50 : x
  2. Step 2: Convert to fraction form
    391.92/590.83 = 365.50/x
  3. Step 3: Cross multiply
    391.92x = 590.83 × 365.50
  4. Step 4: Simplify right side
    391.92x = 215,943.58
  5. Step 5: Solve for x
    x = 215,943.58/391.92
  6. Step 6: Final answer
    x = 550.99

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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.