Finding the Fourth Proportional to 290.44, 400.97 and 197.68
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Solution
The fourth proportional to 290.44, 400.97 and 197.68 is: 272.91
Step by Step Solution
- Step 1: Write the proportion equation
290.44 : 400.97 = 197.68 : x - Step 2: Convert to fraction form
290.44/400.97 = 197.68/x - Step 3: Cross multiply
290.44x = 400.97 × 197.68 - Step 4: Simplify right side
290.44x = 79,263.75 - Step 5: Solve for x
x = 79,263.75/290.44 - Step 6: Final answer
x = 272.91
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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.