Finding the Fourth Proportional to 83.99, 126.06 and 38.31
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Solution
The fourth proportional to 83.99, 126.06 and 38.31 is: 57.50
Step by Step Solution
- Step 1: Write the proportion equation
83.99 : 126.06 = 38.31 : x - Step 2: Convert to fraction form
83.99/126.06 = 38.31/x - Step 3: Cross multiply
83.99x = 126.06 × 38.31 - Step 4: Simplify right side
83.99x = 4,829.27 - Step 5: Solve for x
x = 4,829.27/83.99 - Step 6: Final answer
x = 57.50
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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.