Finding the Fourth Proportional to 278.19, 416.67 and 272.65
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Solution
The fourth proportional to 278.19, 416.67 and 272.65 is: 408.37
Step by Step Solution
- Step 1: Write the proportion equation
278.19 : 416.67 = 272.65 : x - Step 2: Convert to fraction form
278.19/416.67 = 272.65/x - Step 3: Cross multiply
278.19x = 416.67 × 272.65 - Step 4: Simplify right side
278.19x = 113,605.08 - Step 5: Solve for x
x = 113,605.08/278.19 - Step 6: Final answer
x = 408.37
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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.