Finding the Fourth Proportional to 108.81, 163.26 and 47.99
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Solution
The fourth proportional to 108.81, 163.26 and 47.99 is: 72.00
Step by Step Solution
- Step 1: Write the proportion equation
108.81 : 163.26 = 47.99 : x - Step 2: Convert to fraction form
108.81/163.26 = 47.99/x - Step 3: Cross multiply
108.81x = 163.26 × 47.99 - Step 4: Simplify right side
108.81x = 7,834.25 - Step 5: Solve for x
x = 7,834.25/108.81 - Step 6: Final answer
x = 72.00
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.