Finding the Fourth Proportional to 170.18, 253.79 and 153.78
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Solution
The fourth proportional to 170.18, 253.79 and 153.78 is: 229.33
Step by Step Solution
- Step 1: Write the proportion equation
170.18 : 253.79 = 153.78 : x - Step 2: Convert to fraction form
170.18/253.79 = 153.78/x - Step 3: Cross multiply
170.18x = 253.79 × 153.78 - Step 4: Simplify right side
170.18x = 39,027.26 - Step 5: Solve for x
x = 39,027.26/170.18 - Step 6: Final answer
x = 229.33
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.