Finding the Fourth Proportional to 253.26, 379.67 and 96.99
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Solution
The fourth proportional to 253.26, 379.67 and 96.99 is: 145.40
Step by Step Solution
- Step 1: Write the proportion equation
253.26 : 379.67 = 96.99 : x - Step 2: Convert to fraction form
253.26/379.67 = 96.99/x - Step 3: Cross multiply
253.26x = 379.67 × 96.99 - Step 4: Simplify right side
253.26x = 36,823.71 - Step 5: Solve for x
x = 36,823.71/253.26 - Step 6: Final answer
x = 145.40
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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.