Finding the Third Proportional to 421 and 756.50
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Solution
The third proportional to 421 and 756.50 is: 1,359.36
Step by Step Solution
- Step 1: Write the proportion equation
421 : 756.50 = 756.50 : x - Step 2: Convert to fraction form
421/756.50 = 756.50/x - Step 3: Cross multiply
421x = 756.50 × 756.50 - Step 4: Simplify right side
421x = 572,292.25 - Step 5: Solve for x
x = 572,292.25/421 - Step 6: Final answer
x = 1,359.36
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Why These Related Problems?
These problems maintain the same ratio (1.80) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.