Finding the Fourth Proportional to 190.99, 285.99 and 122.32
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Solution
The fourth proportional to 190.99, 285.99 and 122.32 is: 183.16
Step by Step Solution
- Step 1: Write the proportion equation
190.99 : 285.99 = 122.32 : x - Step 2: Convert to fraction form
190.99/285.99 = 122.32/x - Step 3: Cross multiply
190.99x = 285.99 × 122.32 - Step 4: Simplify right side
190.99x = 34,982.30 - Step 5: Solve for x
x = 34,982.30/190.99 - Step 6: Final answer
x = 183.16
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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.