Finding the Fourth Proportional to 211.59, 316.71 and 134.28
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Solution
The fourth proportional to 211.59, 316.71 and 134.28 is: 200.99
Step by Step Solution
- Step 1: Write the proportion equation
211.59 : 316.71 = 134.28 : x - Step 2: Convert to fraction form
211.59/316.71 = 134.28/x - Step 3: Cross multiply
211.59x = 316.71 × 134.28 - Step 4: Simplify right side
211.59x = 42,527.82 - Step 5: Solve for x
x = 42,527.82/211.59 - Step 6: Final answer
x = 200.99
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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.