Finding the Fourth Proportional to 178.97, 246.99 and 105.30
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Solution
The fourth proportional to 178.97, 246.99 and 105.30 is: 145.32
Step by Step Solution
- Step 1: Write the proportion equation
178.97 : 246.99 = 105.30 : x - Step 2: Convert to fraction form
178.97/246.99 = 105.30/x - Step 3: Cross multiply
178.97x = 246.99 × 105.30 - Step 4: Simplify right side
178.97x = 26,008.05 - Step 5: Solve for x
x = 26,008.05/178.97 - Step 6: Final answer
x = 145.32
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.