Finding the Fourth Proportional to 178.36, 267.67 and 70.18
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Solution
The fourth proportional to 178.36, 267.67 and 70.18 is: 105.32
Step by Step Solution
- Step 1: Write the proportion equation
178.36 : 267.67 = 70.18 : x - Step 2: Convert to fraction form
178.36/267.67 = 70.18/x - Step 3: Cross multiply
178.36x = 267.67 × 70.18 - Step 4: Simplify right side
178.36x = 18,784.24 - Step 5: Solve for x
x = 18,784.24/178.36 - Step 6: Final answer
x = 105.32
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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.