Finding the Fourth Proportional to 163.63, 225.81 and 98.13
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Solution
The fourth proportional to 163.63, 225.81 and 98.13 is: 135.42
Step by Step Solution
- Step 1: Write the proportion equation
163.63 : 225.81 = 98.13 : x - Step 2: Convert to fraction form
163.63/225.81 = 98.13/x - Step 3: Cross multiply
163.63x = 225.81 × 98.13 - Step 4: Simplify right side
163.63x = 22,158.24 - Step 5: Solve for x
x = 22,158.24/163.63 - Step 6: Final answer
x = 135.42
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.