Finding the Fourth Proportional to 721.12, 995.04 and 410.56
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Solution
The fourth proportional to 721.12, 995.04 and 410.56 is: 566.51
Step by Step Solution
- Step 1: Write the proportion equation
721.12 : 995.04 = 410.56 : x - Step 2: Convert to fraction form
721.12/995.04 = 410.56/x - Step 3: Cross multiply
721.12x = 995.04 × 410.56 - Step 4: Simplify right side
721.12x = 408,523.62 - Step 5: Solve for x
x = 408,523.62/721.12 - Step 6: Final answer
x = 566.51
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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.