Finding the Fourth Proportional to 83.23, 124.86 and 82.99
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Solution
The fourth proportional to 83.23, 124.86 and 82.99 is: 124.50
Step by Step Solution
- Step 1: Write the proportion equation
83.23 : 124.86 = 82.99 : x - Step 2: Convert to fraction form
83.23/124.86 = 82.99/x - Step 3: Cross multiply
83.23x = 124.86 × 82.99 - Step 4: Simplify right side
83.23x = 10,362.13 - Step 5: Solve for x
x = 10,362.13/83.23 - Step 6: Final answer
x = 124.50
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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.