Finding the Fourth Proportional to 193.68, 290.40 and 121.44
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Solution
The fourth proportional to 193.68, 290.40 and 121.44 is: 182.08
Step by Step Solution
- Step 1: Write the proportion equation
193.68 : 290.40 = 121.44 : x - Step 2: Convert to fraction form
193.68/290.40 = 121.44/x - Step 3: Cross multiply
193.68x = 290.40 × 121.44 - Step 4: Simplify right side
193.68x = 35,266.18 - Step 5: Solve for x
x = 35,266.18/193.68 - Step 6: Final answer
x = 182.08
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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.