Finding the Fourth Proportional to 358.54, 537.64 and 115.09
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Solution
The fourth proportional to 358.54, 537.64 and 115.09 is: 172.58
Step by Step Solution
- Step 1: Write the proportion equation
358.54 : 537.64 = 115.09 : x - Step 2: Convert to fraction form
358.54/537.64 = 115.09/x - Step 3: Cross multiply
358.54x = 537.64 × 115.09 - Step 4: Simplify right side
358.54x = 61,876.99 - Step 5: Solve for x
x = 61,876.99/358.54 - Step 6: Final answer
x = 172.58
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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.