Finding the Fourth Proportional to 310.99, 466.39 and 128.44
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Solution
The fourth proportional to 310.99, 466.39 and 128.44 is: 192.62
Step by Step Solution
- Step 1: Write the proportion equation
310.99 : 466.39 = 128.44 : x - Step 2: Convert to fraction form
310.99/466.39 = 128.44/x - Step 3: Cross multiply
310.99x = 466.39 × 128.44 - Step 4: Simplify right side
310.99x = 59,903.13 - Step 5: Solve for x
x = 59,903.13/310.99 - Step 6: Final answer
x = 192.62
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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.