Finding the Fourth Proportional to 163.53, 225.41 and 126.68
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Solution
The fourth proportional to 163.53, 225.41 and 126.68 is: 174.61
Step by Step Solution
- Step 1: Write the proportion equation
163.53 : 225.41 = 126.68 : x - Step 2: Convert to fraction form
163.53/225.41 = 126.68/x - Step 3: Cross multiply
163.53x = 225.41 × 126.68 - Step 4: Simplify right side
163.53x = 28,553.18 - Step 5: Solve for x
x = 28,553.18/163.53 - Step 6: Final answer
x = 174.61
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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.