Finding the Fourth Proportional to 163.89, 226.08 and 117.18
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Solution
The fourth proportional to 163.89, 226.08 and 117.18 is: 161.65
Step by Step Solution
- Step 1: Write the proportion equation
163.89 : 226.08 = 117.18 : x - Step 2: Convert to fraction form
163.89/226.08 = 117.18/x - Step 3: Cross multiply
163.89x = 226.08 × 117.18 - Step 4: Simplify right side
163.89x = 26,492.05 - Step 5: Solve for x
x = 26,492.05/163.89 - Step 6: Final answer
x = 161.65
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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.