Finding the Fourth Proportional to 163.28, 225.09 and 116.63
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Solution
The fourth proportional to 163.28, 225.09 and 116.63 is: 160.79
Step by Step Solution
- Step 1: Write the proportion equation
163.28 : 225.09 = 116.63 : x - Step 2: Convert to fraction form
163.28/225.09 = 116.63/x - Step 3: Cross multiply
163.28x = 225.09 × 116.63 - Step 4: Simplify right side
163.28x = 26,252.25 - Step 5: Solve for x
x = 26,252.25/163.28 - Step 6: Final answer
x = 160.79
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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.