Finding the Fourth Proportional to 272.70, 376.12 and 198.99
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Solution
The fourth proportional to 272.70, 376.12 and 198.99 is: 274.45
Step by Step Solution
- Step 1: Write the proportion equation
272.70 : 376.12 = 198.99 : x - Step 2: Convert to fraction form
272.70/376.12 = 198.99/x - Step 3: Cross multiply
272.70x = 376.12 × 198.99 - Step 4: Simplify right side
272.70x = 74,844.56 - Step 5: Solve for x
x = 74,844.56/272.70 - Step 6: Final answer
x = 274.45
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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.