Finding the Fourth Proportional to 656.28, 984.99 and 381.99
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Solution
The fourth proportional to 656.28, 984.99 and 381.99 is: 573.32
Step by Step Solution
- Step 1: Write the proportion equation
656.28 : 984.99 = 381.99 : x - Step 2: Convert to fraction form
656.28/984.99 = 381.99/x - Step 3: Cross multiply
656.28x = 984.99 × 381.99 - Step 4: Simplify right side
656.28x = 376,256.33 - Step 5: Solve for x
x = 376,256.33/656.28 - Step 6: Final answer
x = 573.32
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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.