Finding the Fourth Proportional to 251.21, 376.95 and 135.74
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Solution
The fourth proportional to 251.21, 376.95 and 135.74 is: 203.68
Step by Step Solution
- Step 1: Write the proportion equation
251.21 : 376.95 = 135.74 : x - Step 2: Convert to fraction form
251.21/376.95 = 135.74/x - Step 3: Cross multiply
251.21x = 376.95 × 135.74 - Step 4: Simplify right side
251.21x = 51,167.19 - Step 5: Solve for x
x = 51,167.19/251.21 - Step 6: Final answer
x = 203.68
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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.