Finding the Fourth Proportional to 389.40, 584.30 and 226.99
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Solution
The fourth proportional to 389.40, 584.30 and 226.99 is: 340.60
Step by Step Solution
- Step 1: Write the proportion equation
389.40 : 584.30 = 226.99 : x - Step 2: Convert to fraction form
389.40/584.30 = 226.99/x - Step 3: Cross multiply
389.40x = 584.30 × 226.99 - Step 4: Simplify right side
389.40x = 132,630.26 - Step 5: Solve for x
x = 132,630.26/389.40 - Step 6: Final answer
x = 340.60
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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.