Finding the Fourth Proportional to 163.76, 245.88 and 161.60
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Solution
The fourth proportional to 163.76, 245.88 and 161.60 is: 242.64
Step by Step Solution
- Step 1: Write the proportion equation
163.76 : 245.88 = 161.60 : x - Step 2: Convert to fraction form
163.76/245.88 = 161.60/x - Step 3: Cross multiply
163.76x = 245.88 × 161.60 - Step 4: Simplify right side
163.76x = 39,734.21 - Step 5: Solve for x
x = 39,734.21/163.76 - Step 6: Final answer
x = 242.64
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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.