Finding the Fourth Proportional to 381.10, 571.77 and 236.92
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Solution
The fourth proportional to 381.10, 571.77 and 236.92 is: 355.45
Step by Step Solution
- Step 1: Write the proportion equation
381.10 : 571.77 = 236.92 : x - Step 2: Convert to fraction form
381.10/571.77 = 236.92/x - Step 3: Cross multiply
381.10x = 571.77 × 236.92 - Step 4: Simplify right side
381.10x = 135,463.75 - Step 5: Solve for x
x = 135,463.75/381.10 - Step 6: Final answer
x = 355.45
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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.