Finding the Fourth Proportional to 274.21, 378.34 and 163.66
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Solution
The fourth proportional to 274.21, 378.34 and 163.66 is: 225.81
Step by Step Solution
- Step 1: Write the proportion equation
274.21 : 378.34 = 163.66 : x - Step 2: Convert to fraction form
274.21/378.34 = 163.66/x - Step 3: Cross multiply
274.21x = 378.34 × 163.66 - Step 4: Simplify right side
274.21x = 61,919.12 - Step 5: Solve for x
x = 61,919.12/274.21 - Step 6: Final answer
x = 225.81
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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.