Finding the Fourth Proportional to 178.60, 246.44 and 129.74
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Solution
The fourth proportional to 178.60, 246.44 and 129.74 is: 179.02
Step by Step Solution
- Step 1: Write the proportion equation
178.60 : 246.44 = 129.74 : x - Step 2: Convert to fraction form
178.60/246.44 = 129.74/x - Step 3: Cross multiply
178.60x = 246.44 × 129.74 - Step 4: Simplify right side
178.60x = 31,973.13 - Step 5: Solve for x
x = 31,973.13/178.60 - Step 6: Final answer
x = 179.02
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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.