Finding the Fourth Proportional to 269.62, 372.08 and 153.18
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Solution
The fourth proportional to 269.62, 372.08 and 153.18 is: 211.39
Step by Step Solution
- Step 1: Write the proportion equation
269.62 : 372.08 = 153.18 : x - Step 2: Convert to fraction form
269.62/372.08 = 153.18/x - Step 3: Cross multiply
269.62x = 372.08 × 153.18 - Step 4: Simplify right side
269.62x = 56,995.21 - Step 5: Solve for x
x = 56,995.21/269.62 - Step 6: Final answer
x = 211.39
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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.