Finding the Fourth Proportional to 163.23, 225.11 and 107.91
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Solution
The fourth proportional to 163.23, 225.11 and 107.91 is: 148.82
Step by Step Solution
- Step 1: Write the proportion equation
163.23 : 225.11 = 107.91 : x - Step 2: Convert to fraction form
163.23/225.11 = 107.91/x - Step 3: Cross multiply
163.23x = 225.11 × 107.91 - Step 4: Simplify right side
163.23x = 24,291.08 - Step 5: Solve for x
x = 24,291.08/163.23 - Step 6: Final answer
x = 148.82
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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.