Finding the Fourth Proportional to 43.24, 59.69 and 30.99
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Solution
The fourth proportional to 43.24, 59.69 and 30.99 is: 42.78
Step by Step Solution
- Step 1: Write the proportion equation
43.24 : 59.69 = 30.99 : x - Step 2: Convert to fraction form
43.24/59.69 = 30.99/x - Step 3: Cross multiply
43.24x = 59.69 × 30.99 - Step 4: Simplify right side
43.24x = 1,849.79 - Step 5: Solve for x
x = 1,849.79/43.24 - Step 6: Final answer
x = 42.78
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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.