Finding the Fourth Proportional to 45.39, 62.61 and 28.99
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Solution
The fourth proportional to 45.39, 62.61 and 28.99 is: 39.98
Step by Step Solution
- Step 1: Write the proportion equation
45.39 : 62.61 = 28.99 : x - Step 2: Convert to fraction form
45.39/62.61 = 28.99/x - Step 3: Cross multiply
45.39x = 62.61 × 28.99 - Step 4: Simplify right side
45.39x = 1,815.03 - Step 5: Solve for x
x = 1,815.03/45.39 - Step 6: Final answer
x = 39.98
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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.