Finding the Fourth Proportional to 252.75, 378.98 and 136.99
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Solution
The fourth proportional to 252.75, 378.98 and 136.99 is: 205.40
Step by Step Solution
- Step 1: Write the proportion equation
252.75 : 378.98 = 136.99 : x - Step 2: Convert to fraction form
252.75/378.98 = 136.99/x - Step 3: Cross multiply
252.75x = 378.98 × 136.99 - Step 4: Simplify right side
252.75x = 51,916.77 - Step 5: Solve for x
x = 51,916.77/252.75 - Step 6: Final answer
x = 205.40
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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.