Finding the Fourth Proportional to 163.18, 244.77 and 115.12
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Solution
The fourth proportional to 163.18, 244.77 and 115.12 is: 172.68
Step by Step Solution
- Step 1: Write the proportion equation
163.18 : 244.77 = 115.12 : x - Step 2: Convert to fraction form
163.18/244.77 = 115.12/x - Step 3: Cross multiply
163.18x = 244.77 × 115.12 - Step 4: Simplify right side
163.18x = 28,177.92 - Step 5: Solve for x
x = 28,177.92/163.18 - Step 6: Final answer
x = 172.68
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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.