Finding the Fourth Proportional to 163.92, 226.48 and 154.81
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Solution
The fourth proportional to 163.92, 226.48 and 154.81 is: 213.89
Step by Step Solution
- Step 1: Write the proportion equation
163.92 : 226.48 = 154.81 : x - Step 2: Convert to fraction form
163.92/226.48 = 154.81/x - Step 3: Cross multiply
163.92x = 226.48 × 154.81 - Step 4: Simplify right side
163.92x = 35,060.24 - Step 5: Solve for x
x = 35,060.24/163.92 - Step 6: Final answer
x = 213.89
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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.