Finding the Fourth Proportional to 83.93, 125.74 and 74.99
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Solution
The fourth proportional to 83.93, 125.74 and 74.99 is: 112.35
Step by Step Solution
- Step 1: Write the proportion equation
83.93 : 125.74 = 74.99 : x - Step 2: Convert to fraction form
83.93/125.74 = 74.99/x - Step 3: Cross multiply
83.93x = 125.74 × 74.99 - Step 4: Simplify right side
83.93x = 9,429.24 - Step 5: Solve for x
x = 9,429.24/83.93 - Step 6: Final answer
x = 112.35
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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.