Finding the Fourth Proportional to 274.20, 378.36 and 163.63
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Solution
The fourth proportional to 274.20, 378.36 and 163.63 is: 225.79
Step by Step Solution
- Step 1: Write the proportion equation
274.20 : 378.36 = 163.63 : x - Step 2: Convert to fraction form
274.20/378.36 = 163.63/x - Step 3: Cross multiply
274.20x = 378.36 × 163.63 - Step 4: Simplify right side
274.20x = 61,911.05 - Step 5: Solve for x
x = 61,911.05/274.20 - Step 6: Final answer
x = 225.79
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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.