Finding the Fourth Proportional to 936.26, 1,292 and 543.28
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Solution
The fourth proportional to 936.26, 1,292 and 543.28 is: 749.70
Step by Step Solution
- Step 1: Write the proportion equation
936.26 : 1,292 = 543.28 : x - Step 2: Convert to fraction form
936.26/1,292 = 543.28/x - Step 3: Cross multiply
936.26x = 1,292 × 543.28 - Step 4: Simplify right side
936.26x = 701,917.76 - Step 5: Solve for x
x = 701,917.76/936.26 - Step 6: Final answer
x = 749.70
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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.