Finding the Fourth Proportional to 83.63, 124.85 and 83.06
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Solution
The fourth proportional to 83.63, 124.85 and 83.06 is: 123.99
Step by Step Solution
- Step 1: Write the proportion equation
83.63 : 124.85 = 83.06 : x - Step 2: Convert to fraction form
83.63/124.85 = 83.06/x - Step 3: Cross multiply
83.63x = 124.85 × 83.06 - Step 4: Simplify right side
83.63x = 10,369.00 - Step 5: Solve for x
x = 10,369.00/83.63 - Step 6: Final answer
x = 123.99
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.