Finding the Fourth Proportional to 850.23, 1,274.94 and 387.99
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Solution
The fourth proportional to 850.23, 1,274.94 and 387.99 is: 581.80
Step by Step Solution
- Step 1: Write the proportion equation
850.23 : 1,274.94 = 387.99 : x - Step 2: Convert to fraction form
850.23/1,274.94 = 387.99/x - Step 3: Cross multiply
850.23x = 1,274.94 × 387.99 - Step 4: Simplify right side
850.23x = 494,663.97 - Step 5: Solve for x
x = 494,663.97/850.23 - Step 6: Final answer
x = 581.80
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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.