Finding the Fourth Proportional to 482.30, 664.91 and 305.18
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Solution
The fourth proportional to 482.30, 664.91 and 305.18 is: 420.72
Step by Step Solution
- Step 1: Write the proportion equation
482.30 : 664.91 = 305.18 : x - Step 2: Convert to fraction form
482.30/664.91 = 305.18/x - Step 3: Cross multiply
482.30x = 664.91 × 305.18 - Step 4: Simplify right side
482.30x = 202,914.67 - Step 5: Solve for x
x = 202,914.67/482.30 - Step 6: Final answer
x = 420.72
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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.