Finding the Fourth Proportional to 145.97, 218.67 and 84.97
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Solution
The fourth proportional to 145.97, 218.67 and 84.97 is: 127.29
Step by Step Solution
- Step 1: Write the proportion equation
145.97 : 218.67 = 84.97 : x - Step 2: Convert to fraction form
145.97/218.67 = 84.97/x - Step 3: Cross multiply
145.97x = 218.67 × 84.97 - Step 4: Simplify right side
145.97x = 18,579.97 - Step 5: Solve for x
x = 18,579.97/145.97 - Step 6: Final answer
x = 127.29
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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.