Finding the Fourth Proportional to 178.26, 267.51 and 86.99
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Solution
The fourth proportional to 178.26, 267.51 and 86.99 is: 130.54
Step by Step Solution
- Step 1: Write the proportion equation
178.26 : 267.51 = 86.99 : x - Step 2: Convert to fraction form
178.26/267.51 = 86.99/x - Step 3: Cross multiply
178.26x = 267.51 × 86.99 - Step 4: Simplify right side
178.26x = 23,269.36 - Step 5: Solve for x
x = 23,269.36/178.26 - Step 6: Final answer
x = 130.54
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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.