Finding the Third Proportional to 63 and 139
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Solution
The third proportional to 63 and 139 is: 306.68
Step by Step Solution
- Step 1: Write the proportion equation
63 : 139 = 139 : x - Step 2: Convert to fraction form
63/139 = 139/x - Step 3: Cross multiply
63x = 139 × 139 - Step 4: Simplify right side
63x = 19,321 - Step 5: Solve for x
x = 19,321/63 - Step 6: Final answer
x = 306.68
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Why These Related Problems?
These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.