Finding the Fourth Proportional to 163.18, 225.17 and 100.99
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Solution
The fourth proportional to 163.18, 225.17 and 100.99 is: 139.35
Step by Step Solution
- Step 1: Write the proportion equation
163.18 : 225.17 = 100.99 : x - Step 2: Convert to fraction form
163.18/225.17 = 100.99/x - Step 3: Cross multiply
163.18x = 225.17 × 100.99 - Step 4: Simplify right side
163.18x = 22,739.92 - Step 5: Solve for x
x = 22,739.92/163.18 - Step 6: Final answer
x = 139.35
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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.