Finding the Fourth Proportional to 199.26, 274.99 and 120.58
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Solution
The fourth proportional to 199.26, 274.99 and 120.58 is: 166.41
Step by Step Solution
- Step 1: Write the proportion equation
199.26 : 274.99 = 120.58 : x - Step 2: Convert to fraction form
199.26/274.99 = 120.58/x - Step 3: Cross multiply
199.26x = 274.99 × 120.58 - Step 4: Simplify right side
199.26x = 33,158.29 - Step 5: Solve for x
x = 33,158.29/199.26 - Step 6: Final answer
x = 166.41
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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.