Finding the Fourth Proportional to 513.36, 707.84 and 486
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Solution
The fourth proportional to 513.36, 707.84 and 486 is: 670.12
Step by Step Solution
- Step 1: Write the proportion equation
513.36 : 707.84 = 486 : x - Step 2: Convert to fraction form
513.36/707.84 = 486/x - Step 3: Cross multiply
513.36x = 707.84 × 486 - Step 4: Simplify right side
513.36x = 344,010.24 - Step 5: Solve for x
x = 344,010.24/513.36 - Step 6: Final answer
x = 670.12
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.