Finding the Fourth Proportional to 39.87, 55.04 and 32.99
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Solution
The fourth proportional to 39.87, 55.04 and 32.99 is: 45.53
Step by Step Solution
- Step 1: Write the proportion equation
39.87 : 55.04 = 32.99 : x - Step 2: Convert to fraction form
39.87/55.04 = 32.99/x - Step 3: Cross multiply
39.87x = 55.04 × 32.99 - Step 4: Simplify right side
39.87x = 1,815.33 - Step 5: Solve for x
x = 1,815.33/39.87 - Step 6: Final answer
x = 45.53
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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.