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Finding the Fourth Proportional to 505.26, 757.41 and 231.19

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Solution

The fourth proportional to 505.26, 757.41 and 231.19 is: 346.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.26 : 757.41 = 231.19 : x
  2. Step 2: Convert to fraction form
    505.26/757.41 = 231.19/x
  3. Step 3: Cross multiply
    505.26x = 757.41 × 231.19
  4. Step 4: Simplify right side
    505.26x = 175,105.62
  5. Step 5: Solve for x
    x = 175,105.62/505.26
  6. Step 6: Final answer
    x = 346.57

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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.