Finding the Third Proportional to 220 and 530
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Solution
The third proportional to 220 and 530 is: 1,276.82
Step by Step Solution
- Step 1: Write the proportion equation
220 : 530 = 530 : x - Step 2: Convert to fraction form
220/530 = 530/x - Step 3: Cross multiply
220x = 530 × 530 - Step 4: Simplify right side
220x = 280,900 - Step 5: Solve for x
x = 280,900/220 - Step 6: Final answer
x = 1,276.82
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Why These Related Problems?
These problems maintain the same ratio (2.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.