Finding the Fourth Proportional to 84.65, 126.99 and 48.59
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Solution
The fourth proportional to 84.65, 126.99 and 48.59 is: 72.89
Step by Step Solution
- Step 1: Write the proportion equation
84.65 : 126.99 = 48.59 : x - Step 2: Convert to fraction form
84.65/126.99 = 48.59/x - Step 3: Cross multiply
84.65x = 126.99 × 48.59 - Step 4: Simplify right side
84.65x = 6,170.44 - Step 5: Solve for x
x = 6,170.44/84.65 - Step 6: Final answer
x = 72.89
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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.