Finding the Fourth Proportional to 163.20, 225.36 and 119.19
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Solution
The fourth proportional to 163.20, 225.36 and 119.19 is: 164.58
Step by Step Solution
- Step 1: Write the proportion equation
163.20 : 225.36 = 119.19 : x - Step 2: Convert to fraction form
163.20/225.36 = 119.19/x - Step 3: Cross multiply
163.20x = 225.36 × 119.19 - Step 4: Simplify right side
163.20x = 26,859.37 - Step 5: Solve for x
x = 26,859.37/163.20 - Step 6: Final answer
x = 164.58
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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.