Finding the Third Proportional to 428 and 763
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Solution
The third proportional to 428 and 763 is: 1,360.21
Step by Step Solution
- Step 1: Write the proportion equation
428 : 763 = 763 : x - Step 2: Convert to fraction form
428/763 = 763/x - Step 3: Cross multiply
428x = 763 × 763 - Step 4: Simplify right side
428x = 582,169 - Step 5: Solve for x
x = 582,169/428 - Step 6: Final answer
x = 1,360.21
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Why These Related Problems?
These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.