Finding the Fourth Proportional to 249.25, 343.99 and 145.75
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Solution
The fourth proportional to 249.25, 343.99 and 145.75 is: 201.15
Step by Step Solution
- Step 1: Write the proportion equation
249.25 : 343.99 = 145.75 : x - Step 2: Convert to fraction form
249.25/343.99 = 145.75/x - Step 3: Cross multiply
249.25x = 343.99 × 145.75 - Step 4: Simplify right side
249.25x = 50,136.18 - Step 5: Solve for x
x = 50,136.18/249.25 - Step 6: Final answer
x = 201.15
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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.