Finding the Fourth Proportional to 178.79, 246.81 and 135.14
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Solution
The fourth proportional to 178.79, 246.81 and 135.14 is: 186.55
Step by Step Solution
- Step 1: Write the proportion equation
178.79 : 246.81 = 135.14 : x - Step 2: Convert to fraction form
178.79/246.81 = 135.14/x - Step 3: Cross multiply
178.79x = 246.81 × 135.14 - Step 4: Simplify right side
178.79x = 33,352.67 - Step 5: Solve for x
x = 33,352.67/178.79 - Step 6: Final answer
x = 186.55
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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.