Finding the Fourth Proportional to 62.09, 85.72 and 53.99
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Solution
The fourth proportional to 62.09, 85.72 and 53.99 is: 74.54
Step by Step Solution
- Step 1: Write the proportion equation
62.09 : 85.72 = 53.99 : x - Step 2: Convert to fraction form
62.09/85.72 = 53.99/x - Step 3: Cross multiply
62.09x = 85.72 × 53.99 - Step 4: Simplify right side
62.09x = 4,628.02 - Step 5: Solve for x
x = 4,628.02/62.09 - Step 6: Final answer
x = 74.54
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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.