Finding the Fourth Proportional to 482.75, 666.30 and 307.99
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Solution
The fourth proportional to 482.75, 666.30 and 307.99 is: 425.09
Step by Step Solution
- Step 1: Write the proportion equation
482.75 : 666.30 = 307.99 : x - Step 2: Convert to fraction form
482.75/666.30 = 307.99/x - Step 3: Cross multiply
482.75x = 666.30 × 307.99 - Step 4: Simplify right side
482.75x = 205,213.74 - Step 5: Solve for x
x = 205,213.74/482.75 - Step 6: Final answer
x = 425.09
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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.