Finding the Fourth Proportional to 154.97, 213.44 and 122.17
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Solution
The fourth proportional to 154.97, 213.44 and 122.17 is: 168.26
Step by Step Solution
- Step 1: Write the proportion equation
154.97 : 213.44 = 122.17 : x - Step 2: Convert to fraction form
154.97/213.44 = 122.17/x - Step 3: Cross multiply
154.97x = 213.44 × 122.17 - Step 4: Simplify right side
154.97x = 26,075.74 - Step 5: Solve for x
x = 26,075.74/154.97 - Step 6: Final answer
x = 168.26
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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.