Finding the Fourth Proportional to 290.74, 401 and 197.44
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Solution
The fourth proportional to 290.74, 401 and 197.44 is: 272.32
Step by Step Solution
- Step 1: Write the proportion equation
290.74 : 401 = 197.44 : x - Step 2: Convert to fraction form
290.74/401 = 197.44/x - Step 3: Cross multiply
290.74x = 401 × 197.44 - Step 4: Simplify right side
290.74x = 79,173.44 - Step 5: Solve for x
x = 79,173.44/290.74 - Step 6: Final answer
x = 272.32
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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.