Finding the Fourth Proportional to 163.14, 244.87 and 86.19
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Solution
The fourth proportional to 163.14, 244.87 and 86.19 is: 129.37
Step by Step Solution
- Step 1: Write the proportion equation
163.14 : 244.87 = 86.19 : x - Step 2: Convert to fraction form
163.14/244.87 = 86.19/x - Step 3: Cross multiply
163.14x = 244.87 × 86.19 - Step 4: Simplify right side
163.14x = 21,104.91 - Step 5: Solve for x
x = 21,104.91/163.14 - Step 6: Final answer
x = 129.37
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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.