Finding the Fourth Proportional to 274.11, 378.30 and 163.58
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Solution
The fourth proportional to 274.11, 378.30 and 163.58 is: 225.75
Step by Step Solution
- Step 1: Write the proportion equation
274.11 : 378.30 = 163.58 : x - Step 2: Convert to fraction form
274.11/378.30 = 163.58/x - Step 3: Cross multiply
274.11x = 378.30 × 163.58 - Step 4: Simplify right side
274.11x = 61,880.42 - Step 5: Solve for x
x = 61,880.42/274.11 - Step 6: Final answer
x = 225.75
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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.