Finding the Fourth Proportional to 190.97, 286.41 and 53.99
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Solution
The fourth proportional to 190.97, 286.41 and 53.99 is: 80.98
Step by Step Solution
- Step 1: Write the proportion equation
190.97 : 286.41 = 53.99 : x - Step 2: Convert to fraction form
190.97/286.41 = 53.99/x - Step 3: Cross multiply
190.97x = 286.41 × 53.99 - Step 4: Simplify right side
190.97x = 15,463.99 - Step 5: Solve for x
x = 15,463.99/190.97 - Step 6: Final answer
x = 80.98
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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.