Finding the Fourth Proportional to 163.80, 245.66 and 112.55
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Solution
The fourth proportional to 163.80, 245.66 and 112.55 is: 168.79
Step by Step Solution
- Step 1: Write the proportion equation
163.80 : 245.66 = 112.55 : x - Step 2: Convert to fraction form
163.80/245.66 = 112.55/x - Step 3: Cross multiply
163.80x = 245.66 × 112.55 - Step 4: Simplify right side
163.80x = 27,647.24 - Step 5: Solve for x
x = 27,647.24/163.80 - Step 6: Final answer
x = 168.79
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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.