Finding the Third Proportional to 424.50 and 870
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Solution
The third proportional to 424.50 and 870 is: 1,783.04
Step by Step Solution
- Step 1: Write the proportion equation
424.50 : 870 = 870 : x - Step 2: Convert to fraction form
424.50/870 = 870/x - Step 3: Cross multiply
424.50x = 870 × 870 - Step 4: Simplify right side
424.50x = 756,900 - Step 5: Solve for x
x = 756,900/424.50 - Step 6: Final answer
x = 1,783.04
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Why These Related Problems?
These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.