Finding the Fourth Proportional to 192.19, 287.90 and 126.99
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Solution
The fourth proportional to 192.19, 287.90 and 126.99 is: 190.23
Step by Step Solution
- Step 1: Write the proportion equation
192.19 : 287.90 = 126.99 : x - Step 2: Convert to fraction form
192.19/287.90 = 126.99/x - Step 3: Cross multiply
192.19x = 287.90 × 126.99 - Step 4: Simplify right side
192.19x = 36,560.42 - Step 5: Solve for x
x = 36,560.42/192.19 - Step 6: Final answer
x = 190.23
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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.