Finding the Fourth Proportional to 125.40, 188.12 and 53.32
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Solution
The fourth proportional to 125.40, 188.12 and 53.32 is: 79.99
Step by Step Solution
- Step 1: Write the proportion equation
125.40 : 188.12 = 53.32 : x - Step 2: Convert to fraction form
125.40/188.12 = 53.32/x - Step 3: Cross multiply
125.40x = 188.12 × 53.32 - Step 4: Simplify right side
125.40x = 10,030.56 - Step 5: Solve for x
x = 10,030.56/125.40 - Step 6: Final answer
x = 79.99
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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.