Finding the Fourth Proportional to 163.44, 245.72 and 129.62
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Solution
The fourth proportional to 163.44, 245.72 and 129.62 is: 194.87
Step by Step Solution
- Step 1: Write the proportion equation
163.44 : 245.72 = 129.62 : x - Step 2: Convert to fraction form
163.44/245.72 = 129.62/x - Step 3: Cross multiply
163.44x = 245.72 × 129.62 - Step 4: Simplify right side
163.44x = 31,850.23 - Step 5: Solve for x
x = 31,850.23/163.44 - Step 6: Final answer
x = 194.87
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.