Finding the Fourth Proportional to 163.13, 244.70 and 81.95
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Solution
The fourth proportional to 163.13, 244.70 and 81.95 is: 122.92
Step by Step Solution
- Step 1: Write the proportion equation
163.13 : 244.70 = 81.95 : x - Step 2: Convert to fraction form
163.13/244.70 = 81.95/x - Step 3: Cross multiply
163.13x = 244.70 × 81.95 - Step 4: Simplify right side
163.13x = 20,051.53 - Step 5: Solve for x
x = 20,051.53/163.13 - Step 6: Final answer
x = 122.92
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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.