Finding the Fourth Proportional to 39.26, 58.74 and 25.70
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Solution
The fourth proportional to 39.26, 58.74 and 25.70 is: 38.45
Step by Step Solution
- Step 1: Write the proportion equation
39.26 : 58.74 = 25.70 : x - Step 2: Convert to fraction form
39.26/58.74 = 25.70/x - Step 3: Cross multiply
39.26x = 58.74 × 25.70 - Step 4: Simplify right side
39.26x = 1,509.62 - Step 5: Solve for x
x = 1,509.62/39.26 - Step 6: Final answer
x = 38.45
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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.