Finding the Fourth Proportional to 83.68, 125.43 and 57.99
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Solution
The fourth proportional to 83.68, 125.43 and 57.99 is: 86.92
Step by Step Solution
- Step 1: Write the proportion equation
83.68 : 125.43 = 57.99 : x - Step 2: Convert to fraction form
83.68/125.43 = 57.99/x - Step 3: Cross multiply
83.68x = 125.43 × 57.99 - Step 4: Simplify right side
83.68x = 7,273.69 - Step 5: Solve for x
x = 7,273.69/83.68 - Step 6: Final answer
x = 86.92
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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.