Finding the Third Proportional to 386 and 618
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Solution
The third proportional to 386 and 618 is: 989.44
Step by Step Solution
- Step 1: Write the proportion equation
386 : 618 = 618 : x - Step 2: Convert to fraction form
386/618 = 618/x - Step 3: Cross multiply
386x = 618 × 618 - Step 4: Simplify right side
386x = 381,924 - Step 5: Solve for x
x = 381,924/386 - Step 6: Final answer
x = 989.44
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These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.