Finding the Fourth Proportional to 199.08, 274.68 and 121.44
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Solution
The fourth proportional to 199.08, 274.68 and 121.44 is: 167.56
Step by Step Solution
- Step 1: Write the proportion equation
199.08 : 274.68 = 121.44 : x - Step 2: Convert to fraction form
199.08/274.68 = 121.44/x - Step 3: Cross multiply
199.08x = 274.68 × 121.44 - Step 4: Simplify right side
199.08x = 33,357.14 - Step 5: Solve for x
x = 33,357.14/199.08 - Step 6: Final answer
x = 167.56
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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.