Finding the Fourth Proportional to 45.12, 67.62 and 28.02
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Solution
The fourth proportional to 45.12, 67.62 and 28.02 is: 41.99
Step by Step Solution
- Step 1: Write the proportion equation
45.12 : 67.62 = 28.02 : x - Step 2: Convert to fraction form
45.12/67.62 = 28.02/x - Step 3: Cross multiply
45.12x = 67.62 × 28.02 - Step 4: Simplify right side
45.12x = 1,894.71 - Step 5: Solve for x
x = 1,894.71/45.12 - Step 6: Final answer
x = 41.99
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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.