Finding the Fourth Proportional to 163.80, 226.17 and 122.76
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Solution
The fourth proportional to 163.80, 226.17 and 122.76 is: 169.50
Step by Step Solution
- Step 1: Write the proportion equation
163.80 : 226.17 = 122.76 : x - Step 2: Convert to fraction form
163.80/226.17 = 122.76/x - Step 3: Cross multiply
163.80x = 226.17 × 122.76 - Step 4: Simplify right side
163.80x = 27,764.63 - Step 5: Solve for x
x = 27,764.63/163.80 - Step 6: Final answer
x = 169.50
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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.