Finding the Fourth Proportional to 163.62, 225.68 and 142.85
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Solution
The fourth proportional to 163.62, 225.68 and 142.85 is: 197.03
Step by Step Solution
- Step 1: Write the proportion equation
163.62 : 225.68 = 142.85 : x - Step 2: Convert to fraction form
163.62/225.68 = 142.85/x - Step 3: Cross multiply
163.62x = 225.68 × 142.85 - Step 4: Simplify right side
163.62x = 32,238.24 - Step 5: Solve for x
x = 32,238.24/163.62 - Step 6: Final answer
x = 197.03
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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.