Finding the Fourth Proportional to 178.80, 246.68 and 101.18
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Solution
The fourth proportional to 178.80, 246.68 and 101.18 is: 139.59
Step by Step Solution
- Step 1: Write the proportion equation
178.80 : 246.68 = 101.18 : x - Step 2: Convert to fraction form
178.80/246.68 = 101.18/x - Step 3: Cross multiply
178.80x = 246.68 × 101.18 - Step 4: Simplify right side
178.80x = 24,959.08 - Step 5: Solve for x
x = 24,959.08/178.80 - Step 6: Final answer
x = 139.59
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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.