Finding the Fourth Proportional to 163.08, 244.68 and 81.84
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Solution
The fourth proportional to 163.08, 244.68 and 81.84 is: 122.79
Step by Step Solution
- Step 1: Write the proportion equation
163.08 : 244.68 = 81.84 : x - Step 2: Convert to fraction form
163.08/244.68 = 81.84/x - Step 3: Cross multiply
163.08x = 244.68 × 81.84 - Step 4: Simplify right side
163.08x = 20,024.61 - Step 5: Solve for x
x = 20,024.61/163.08 - Step 6: Final answer
x = 122.79
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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.