Finding the Fourth Proportional to 163.20, 244.80 and 112.08
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Solution
The fourth proportional to 163.20, 244.80 and 112.08 is: 168.12
Step by Step Solution
- Step 1: Write the proportion equation
163.20 : 244.80 = 112.08 : x - Step 2: Convert to fraction form
163.20/244.80 = 112.08/x - Step 3: Cross multiply
163.20x = 244.80 × 112.08 - Step 4: Simplify right side
163.20x = 27,437.18 - Step 5: Solve for x
x = 27,437.18/163.20 - Step 6: Final answer
x = 168.12
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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.