Finding the Third Proportional to 513 and 661.50
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Solution
The third proportional to 513 and 661.50 is: 852.99
Step by Step Solution
- Step 1: Write the proportion equation
513 : 661.50 = 661.50 : x - Step 2: Convert to fraction form
513/661.50 = 661.50/x - Step 3: Cross multiply
513x = 661.50 × 661.50 - Step 4: Simplify right side
513x = 437,582.25 - Step 5: Solve for x
x = 437,582.25/513 - Step 6: Final answer
x = 852.99
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Why These Related Problems?
These problems maintain the same ratio (1.29) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.