Finding the Fourth Proportional to 775.26, 1,070.01 and 513.63
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Solution
The fourth proportional to 775.26, 1,070.01 and 513.63 is: 708.91
Step by Step Solution
- Step 1: Write the proportion equation
775.26 : 1,070.01 = 513.63 : x - Step 2: Convert to fraction form
775.26/1,070.01 = 513.63/x - Step 3: Cross multiply
775.26x = 1,070.01 × 513.63 - Step 4: Simplify right side
775.26x = 549,589.24 - Step 5: Solve for x
x = 549,589.24/775.26 - Step 6: Final answer
x = 708.91
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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.