Finding the Fourth Proportional to 206.19, 308.97 and 144.99
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Solution
The fourth proportional to 206.19, 308.97 and 144.99 is: 217.26
Step by Step Solution
- Step 1: Write the proportion equation
206.19 : 308.97 = 144.99 : x - Step 2: Convert to fraction form
206.19/308.97 = 144.99/x - Step 3: Cross multiply
206.19x = 308.97 × 144.99 - Step 4: Simplify right side
206.19x = 44,797.56 - Step 5: Solve for x
x = 44,797.56/206.19 - Step 6: Final answer
x = 217.26
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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.