Finding the Fourth Proportional to 770.10, 1,062.21 and 474.99
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Solution
The fourth proportional to 770.10, 1,062.21 and 474.99 is: 655.16
Step by Step Solution
- Step 1: Write the proportion equation
770.10 : 1,062.21 = 474.99 : x - Step 2: Convert to fraction form
770.10/1,062.21 = 474.99/x - Step 3: Cross multiply
770.10x = 1,062.21 × 474.99 - Step 4: Simplify right side
770.10x = 504,539.13 - Step 5: Solve for x
x = 504,539.13/770.10 - Step 6: Final answer
x = 655.16
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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.