Finding the Fourth Proportional to 331.28, 457.26 and 226.68
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Solution
The fourth proportional to 331.28, 457.26 and 226.68 is: 312.89
Step by Step Solution
- Step 1: Write the proportion equation
331.28 : 457.26 = 226.68 : x - Step 2: Convert to fraction form
331.28/457.26 = 226.68/x - Step 3: Cross multiply
331.28x = 457.26 × 226.68 - Step 4: Simplify right side
331.28x = 103,651.70 - Step 5: Solve for x
x = 103,651.70/331.28 - Step 6: Final answer
x = 312.89
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.