Finding the Fourth Proportional to 83.96, 115.86 and 67.62
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Solution
The fourth proportional to 83.96, 115.86 and 67.62 is: 93.31
Step by Step Solution
- Step 1: Write the proportion equation
83.96 : 115.86 = 67.62 : x - Step 2: Convert to fraction form
83.96/115.86 = 67.62/x - Step 3: Cross multiply
83.96x = 115.86 × 67.62 - Step 4: Simplify right side
83.96x = 7,834.45 - Step 5: Solve for x
x = 7,834.45/83.96 - Step 6: Final answer
x = 93.31
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.