Finding the Fourth Proportional to 226.19, 312.14 and 122.69
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Solution
The fourth proportional to 226.19, 312.14 and 122.69 is: 169.31
Step by Step Solution
- Step 1: Write the proportion equation
226.19 : 312.14 = 122.69 : x - Step 2: Convert to fraction form
226.19/312.14 = 122.69/x - Step 3: Cross multiply
226.19x = 312.14 × 122.69 - Step 4: Simplify right side
226.19x = 38,295.68 - Step 5: Solve for x
x = 38,295.68/226.19 - Step 6: Final answer
x = 169.31
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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.