Finding the Fourth Proportional to 285.68, 394.26 and 190.99
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Solution
The fourth proportional to 285.68, 394.26 and 190.99 is: 263.58
Step by Step Solution
- Step 1: Write the proportion equation
285.68 : 394.26 = 190.99 : x - Step 2: Convert to fraction form
285.68/394.26 = 190.99/x - Step 3: Cross multiply
285.68x = 394.26 × 190.99 - Step 4: Simplify right side
285.68x = 75,299.72 - Step 5: Solve for x
x = 75,299.72/285.68 - Step 6: Final answer
x = 263.58
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.