Finding the Fourth Proportional to 777.26, 1,072.08 and 528.44
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Solution
The fourth proportional to 777.26, 1,072.08 and 528.44 is: 728.88
Step by Step Solution
- Step 1: Write the proportion equation
777.26 : 1,072.08 = 528.44 : x - Step 2: Convert to fraction form
777.26/1,072.08 = 528.44/x - Step 3: Cross multiply
777.26x = 1,072.08 × 528.44 - Step 4: Simplify right side
777.26x = 566,529.96 - Step 5: Solve for x
x = 566,529.96/777.26 - Step 6: Final answer
x = 728.88
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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.