Finding the Fourth Proportional to 290.24, 435.26 and 84.75
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Solution
The fourth proportional to 290.24, 435.26 and 84.75 is: 127.10
Step by Step Solution
- Step 1: Write the proportion equation
290.24 : 435.26 = 84.75 : x - Step 2: Convert to fraction form
290.24/435.26 = 84.75/x - Step 3: Cross multiply
290.24x = 435.26 × 84.75 - Step 4: Simplify right side
290.24x = 36,887.86 - Step 5: Solve for x
x = 36,887.86/290.24 - Step 6: Final answer
x = 127.10
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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.