Finding the Fourth Proportional to 178.99, 247.18 and 142.33
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Solution
The fourth proportional to 178.99, 247.18 and 142.33 is: 196.55
Step by Step Solution
- Step 1: Write the proportion equation
178.99 : 247.18 = 142.33 : x - Step 2: Convert to fraction form
178.99/247.18 = 142.33/x - Step 3: Cross multiply
178.99x = 247.18 × 142.33 - Step 4: Simplify right side
178.99x = 35,181.13 - Step 5: Solve for x
x = 35,181.13/178.99 - Step 6: Final answer
x = 196.55
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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.