Finding the Fourth Proportional to 290.26, 432.26 and 284.26
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Solution
The fourth proportional to 290.26, 432.26 and 284.26 is: 423.32
Step by Step Solution
- Step 1: Write the proportion equation
290.26 : 432.26 = 284.26 : x - Step 2: Convert to fraction form
290.26/432.26 = 284.26/x - Step 3: Cross multiply
290.26x = 432.26 × 284.26 - Step 4: Simplify right side
290.26x = 122,874.23 - Step 5: Solve for x
x = 122,874.23/290.26 - Step 6: Final answer
x = 423.32
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.