Finding the Fourth Proportional to 211.26, 316.84 and 64.99
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Solution
The fourth proportional to 211.26, 316.84 and 64.99 is: 97.47
Step by Step Solution
- Step 1: Write the proportion equation
211.26 : 316.84 = 64.99 : x - Step 2: Convert to fraction form
211.26/316.84 = 64.99/x - Step 3: Cross multiply
211.26x = 316.84 × 64.99 - Step 4: Simplify right side
211.26x = 20,591.43 - Step 5: Solve for x
x = 20,591.43/211.26 - Step 6: Final answer
x = 97.47
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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.