Finding the Third Proportional to 328 and 478
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Solution
The third proportional to 328 and 478 is: 696.60
Step by Step Solution
- Step 1: Write the proportion equation
328 : 478 = 478 : x - Step 2: Convert to fraction form
328/478 = 478/x - Step 3: Cross multiply
328x = 478 × 478 - Step 4: Simplify right side
328x = 228,484 - Step 5: Solve for x
x = 228,484/328 - Step 6: Final answer
x = 696.60
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These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.