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Finding the Fourth Proportional to 391.44, 585.27 and 334.34

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Solution

The fourth proportional to 391.44, 585.27 and 334.34 is: 499.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    391.44 : 585.27 = 334.34 : x
  2. Step 2: Convert to fraction form
    391.44/585.27 = 334.34/x
  3. Step 3: Cross multiply
    391.44x = 585.27 × 334.34
  4. Step 4: Simplify right side
    391.44x = 195,676.25
  5. Step 5: Solve for x
    x = 195,676.25/391.44
  6. Step 6: Final answer
    x = 499.89

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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.