Finding the Fourth Proportional to 290.18, 435.18 and 84.68
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Solution
The fourth proportional to 290.18, 435.18 and 84.68 is: 127.00
Step by Step Solution
- Step 1: Write the proportion equation
290.18 : 435.18 = 84.68 : x - Step 2: Convert to fraction form
290.18/435.18 = 84.68/x - Step 3: Cross multiply
290.18x = 435.18 × 84.68 - Step 4: Simplify right side
290.18x = 36,851.23 - Step 5: Solve for x
x = 36,851.23/290.18 - Step 6: Final answer
x = 127.00
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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.