Finding the Fourth Proportional to 379.21, 522.84 and 247.99
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Solution
The fourth proportional to 379.21, 522.84 and 247.99 is: 341.92
Step by Step Solution
- Step 1: Write the proportion equation
379.21 : 522.84 = 247.99 : x - Step 2: Convert to fraction form
379.21/522.84 = 247.99/x - Step 3: Cross multiply
379.21x = 522.84 × 247.99 - Step 4: Simplify right side
379.21x = 129,659.09 - Step 5: Solve for x
x = 129,659.09/379.21 - Step 6: Final answer
x = 341.92
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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.