Finding the Fourth Proportional to 178.84, 267.88 and 87.26
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Solution
The fourth proportional to 178.84, 267.88 and 87.26 is: 130.70
Step by Step Solution
- Step 1: Write the proportion equation
178.84 : 267.88 = 87.26 : x - Step 2: Convert to fraction form
178.84/267.88 = 87.26/x - Step 3: Cross multiply
178.84x = 267.88 × 87.26 - Step 4: Simplify right side
178.84x = 23,375.21 - Step 5: Solve for x
x = 23,375.21/178.84 - Step 6: Final answer
x = 130.70
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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.