Finding the Third Proportional to 408 and 870.38
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Solution
The third proportional to 408 and 870.38 is: 1,856.75
Step by Step Solution
- Step 1: Write the proportion equation
408 : 870.38 = 870.38 : x - Step 2: Convert to fraction form
408/870.38 = 870.38/x - Step 3: Cross multiply
408x = 870.38 × 870.38 - Step 4: Simplify right side
408x = 757,552.64 - Step 5: Solve for x
x = 757,552.64/408 - Step 6: Final answer
x = 1,856.75
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Why These Related Problems?
These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.