Finding the Fourth Proportional to 163.28, 245.20 and 132.88
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Solution
The fourth proportional to 163.28, 245.20 and 132.88 is: 199.55
Step by Step Solution
- Step 1: Write the proportion equation
163.28 : 245.20 = 132.88 : x - Step 2: Convert to fraction form
163.28/245.20 = 132.88/x - Step 3: Cross multiply
163.28x = 245.20 × 132.88 - Step 4: Simplify right side
163.28x = 32,582.18 - Step 5: Solve for x
x = 32,582.18/163.28 - Step 6: Final answer
x = 199.55
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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.