Finding the Fourth Proportional to 251.80, 377.64 and 69.18
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Solution
The fourth proportional to 251.80, 377.64 and 69.18 is: 103.75
Step by Step Solution
- Step 1: Write the proportion equation
251.80 : 377.64 = 69.18 : x - Step 2: Convert to fraction form
251.80/377.64 = 69.18/x - Step 3: Cross multiply
251.80x = 377.64 × 69.18 - Step 4: Simplify right side
251.80x = 26,125.14 - Step 5: Solve for x
x = 26,125.14/251.80 - Step 6: Final answer
x = 103.75
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.