Finding the Fourth Proportional to 211.10, 316.79 and 201.11
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Solution
The fourth proportional to 211.10, 316.79 and 201.11 is: 301.79
Step by Step Solution
- Step 1: Write the proportion equation
211.10 : 316.79 = 201.11 : x - Step 2: Convert to fraction form
211.10/316.79 = 201.11/x - Step 3: Cross multiply
211.10x = 316.79 × 201.11 - Step 4: Simplify right side
211.10x = 63,708.63 - Step 5: Solve for x
x = 63,708.63/211.10 - Step 6: Final answer
x = 301.79
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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.