Finding the Fourth Proportional to 108.97, 163.21 and 54.75
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Solution
The fourth proportional to 108.97, 163.21 and 54.75 is: 82.00
Step by Step Solution
- Step 1: Write the proportion equation
108.97 : 163.21 = 54.75 : x - Step 2: Convert to fraction form
108.97/163.21 = 54.75/x - Step 3: Cross multiply
108.97x = 163.21 × 54.75 - Step 4: Simplify right side
108.97x = 8,935.75 - Step 5: Solve for x
x = 8,935.75/108.97 - Step 6: Final answer
x = 82.00
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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.