Finding the Fourth Proportional to 261.65, 391.97 and 158.99
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Solution
The fourth proportional to 261.65, 391.97 and 158.99 is: 238.17
Step by Step Solution
- Step 1: Write the proportion equation
261.65 : 391.97 = 158.99 : x - Step 2: Convert to fraction form
261.65/391.97 = 158.99/x - Step 3: Cross multiply
261.65x = 391.97 × 158.99 - Step 4: Simplify right side
261.65x = 62,317.75 - Step 5: Solve for x
x = 62,317.75/261.65 - Step 6: Final answer
x = 238.17
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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.