Finding the Fourth Proportional to 188.09, 282.18 and 139.97
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Solution
The fourth proportional to 188.09, 282.18 and 139.97 is: 209.99
Step by Step Solution
- Step 1: Write the proportion equation
188.09 : 282.18 = 139.97 : x - Step 2: Convert to fraction form
188.09/282.18 = 139.97/x - Step 3: Cross multiply
188.09x = 282.18 × 139.97 - Step 4: Simplify right side
188.09x = 39,497.44 - Step 5: Solve for x
x = 39,497.44/188.09 - Step 6: Final answer
x = 209.99
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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.