Finding the Fourth Proportional to 770.26, 1,063.05 and 438.75
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Solution
The fourth proportional to 770.26, 1,063.05 and 438.75 is: 605.53
Step by Step Solution
- Step 1: Write the proportion equation
770.26 : 1,063.05 = 438.75 : x - Step 2: Convert to fraction form
770.26/1,063.05 = 438.75/x - Step 3: Cross multiply
770.26x = 1,063.05 × 438.75 - Step 4: Simplify right side
770.26x = 466,410.99 - Step 5: Solve for x
x = 466,410.99/770.26 - Step 6: Final answer
x = 605.53
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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.