Finding the Fourth Proportional to 235.78, 325.08 and 217.55
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Solution
The fourth proportional to 235.78, 325.08 and 217.55 is: 299.95
Step by Step Solution
- Step 1: Write the proportion equation
235.78 : 325.08 = 217.55 : x - Step 2: Convert to fraction form
235.78/325.08 = 217.55/x - Step 3: Cross multiply
235.78x = 325.08 × 217.55 - Step 4: Simplify right side
235.78x = 70,721.97 - Step 5: Solve for x
x = 70,721.97/235.78 - Step 6: Final answer
x = 299.95
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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.