Finding the Fourth Proportional to 163.05, 225.08 and 107.69
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Solution
The fourth proportional to 163.05, 225.08 and 107.69 is: 148.66
Step by Step Solution
- Step 1: Write the proportion equation
163.05 : 225.08 = 107.69 : x - Step 2: Convert to fraction form
163.05/225.08 = 107.69/x - Step 3: Cross multiply
163.05x = 225.08 × 107.69 - Step 4: Simplify right side
163.05x = 24,238.87 - Step 5: Solve for x
x = 24,238.87/163.05 - Step 6: Final answer
x = 148.66
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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.