Finding the Fourth Proportional to 268.99, 371.19 and 170.78
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Solution
The fourth proportional to 268.99, 371.19 and 170.78 is: 235.67
Step by Step Solution
- Step 1: Write the proportion equation
268.99 : 371.19 = 170.78 : x - Step 2: Convert to fraction form
268.99/371.19 = 170.78/x - Step 3: Cross multiply
268.99x = 371.19 × 170.78 - Step 4: Simplify right side
268.99x = 63,391.83 - Step 5: Solve for x
x = 63,391.83/268.99 - Step 6: Final answer
x = 235.67
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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.