Finding the Fourth Proportional to 655.81, 984.68 and 437.79
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Solution
The fourth proportional to 655.81, 984.68 and 437.79 is: 657.32
Step by Step Solution
- Step 1: Write the proportion equation
655.81 : 984.68 = 437.79 : x - Step 2: Convert to fraction form
655.81/984.68 = 437.79/x - Step 3: Cross multiply
655.81x = 984.68 × 437.79 - Step 4: Simplify right side
655.81x = 431,075.94 - Step 5: Solve for x
x = 431,075.94/655.81 - Step 6: Final answer
x = 657.32
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.