Finding the Fourth Proportional to 127.58, 190.39 and 113.91
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Solution
The fourth proportional to 127.58, 190.39 and 113.91 is: 169.99
Step by Step Solution
- Step 1: Write the proportion equation
127.58 : 190.39 = 113.91 : x - Step 2: Convert to fraction form
127.58/190.39 = 113.91/x - Step 3: Cross multiply
127.58x = 190.39 × 113.91 - Step 4: Simplify right side
127.58x = 21,687.25 - Step 5: Solve for x
x = 21,687.25/127.58 - Step 6: Final answer
x = 169.99
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.