Finding the Fourth Proportional to 261.62, 392.88 and 170.49
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Solution
The fourth proportional to 261.62, 392.88 and 170.49 is: 256.03
Step by Step Solution
- Step 1: Write the proportion equation
261.62 : 392.88 = 170.49 : x - Step 2: Convert to fraction form
261.62/392.88 = 170.49/x - Step 3: Cross multiply
261.62x = 392.88 × 170.49 - Step 4: Simplify right side
261.62x = 66,982.11 - Step 5: Solve for x
x = 66,982.11/261.62 - Step 6: Final answer
x = 256.03
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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.