Finding the Fourth Proportional to 109.13, 163.69 and 36.99
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Solution
The fourth proportional to 109.13, 163.69 and 36.99 is: 55.49
Step by Step Solution
- Step 1: Write the proportion equation
109.13 : 163.69 = 36.99 : x - Step 2: Convert to fraction form
109.13/163.69 = 36.99/x - Step 3: Cross multiply
109.13x = 163.69 × 36.99 - Step 4: Simplify right side
109.13x = 6,054.80 - Step 5: Solve for x
x = 6,054.80/109.13 - Step 6: Final answer
x = 55.49
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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.