Finding the Fourth Proportional to 274.44, 378.94 and 253.70
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Solution
The fourth proportional to 274.44, 378.94 and 253.70 is: 350.30
Step by Step Solution
- Step 1: Write the proportion equation
274.44 : 378.94 = 253.70 : x - Step 2: Convert to fraction form
274.44/378.94 = 253.70/x - Step 3: Cross multiply
274.44x = 378.94 × 253.70 - Step 4: Simplify right side
274.44x = 96,137.08 - Step 5: Solve for x
x = 96,137.08/274.44 - Step 6: Final answer
x = 350.30
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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.