Finding the Fourth Proportional to 163.80, 225.74 and 155.96
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Solution
The fourth proportional to 163.80, 225.74 and 155.96 is: 214.94
Step by Step Solution
- Step 1: Write the proportion equation
163.80 : 225.74 = 155.96 : x - Step 2: Convert to fraction form
163.80/225.74 = 155.96/x - Step 3: Cross multiply
163.80x = 225.74 × 155.96 - Step 4: Simplify right side
163.80x = 35,206.41 - Step 5: Solve for x
x = 35,206.41/163.80 - Step 6: Final answer
x = 214.94
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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.