Finding the Fourth Proportional to 163.66, 225.88 and 122.42
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Solution
The fourth proportional to 163.66, 225.88 and 122.42 is: 168.96
Step by Step Solution
- Step 1: Write the proportion equation
163.66 : 225.88 = 122.42 : x - Step 2: Convert to fraction form
163.66/225.88 = 122.42/x - Step 3: Cross multiply
163.66x = 225.88 × 122.42 - Step 4: Simplify right side
163.66x = 27,652.23 - Step 5: Solve for x
x = 27,652.23/163.66 - Step 6: Final answer
x = 168.96
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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.