Finding the Third Proportional to 403 and 715
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Solution
The third proportional to 403 and 715 is: 1,268.55
Step by Step Solution
- Step 1: Write the proportion equation
403 : 715 = 715 : x - Step 2: Convert to fraction form
403/715 = 715/x - Step 3: Cross multiply
403x = 715 × 715 - Step 4: Simplify right side
403x = 511,225 - Step 5: Solve for x
x = 511,225/403 - Step 6: Final answer
x = 1,268.55
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Why These Related Problems?
These problems maintain the same ratio (1.77) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.