Finding the Fourth Proportional to 398.44, 550.14 and 343.77
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Solution
The fourth proportional to 398.44, 550.14 and 343.77 is: 474.66
Step by Step Solution
- Step 1: Write the proportion equation
398.44 : 550.14 = 343.77 : x - Step 2: Convert to fraction form
398.44/550.14 = 343.77/x - Step 3: Cross multiply
398.44x = 550.14 × 343.77 - Step 4: Simplify right side
398.44x = 189,121.63 - Step 5: Solve for x
x = 189,121.63/398.44 - Step 6: Final answer
x = 474.66
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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.