Finding the Fourth Proportional to 72.26, 99.70 and 46.38
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Solution
The fourth proportional to 72.26, 99.70 and 46.38 is: 63.99
Step by Step Solution
- Step 1: Write the proportion equation
72.26 : 99.70 = 46.38 : x - Step 2: Convert to fraction form
72.26/99.70 = 46.38/x - Step 3: Cross multiply
72.26x = 99.70 × 46.38 - Step 4: Simplify right side
72.26x = 4,624.09 - Step 5: Solve for x
x = 4,624.09/72.26 - Step 6: Final answer
x = 63.99
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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.