Finding the Fourth Proportional to 272.08, 375.64 and 209.79
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Solution
The fourth proportional to 272.08, 375.64 and 209.79 is: 289.64
Step by Step Solution
- Step 1: Write the proportion equation
272.08 : 375.64 = 209.79 : x - Step 2: Convert to fraction form
272.08/375.64 = 209.79/x - Step 3: Cross multiply
272.08x = 375.64 × 209.79 - Step 4: Simplify right side
272.08x = 78,804.99 - Step 5: Solve for x
x = 78,804.99/272.08 - Step 6: Final answer
x = 289.64
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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.