Finding the Fourth Proportional to 43.30, 59.67 and 30.99
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Solution
The fourth proportional to 43.30, 59.67 and 30.99 is: 42.71
Step by Step Solution
- Step 1: Write the proportion equation
43.30 : 59.67 = 30.99 : x - Step 2: Convert to fraction form
43.30/59.67 = 30.99/x - Step 3: Cross multiply
43.30x = 59.67 × 30.99 - Step 4: Simplify right side
43.30x = 1,849.17 - Step 5: Solve for x
x = 1,849.17/43.30 - Step 6: Final answer
x = 42.71
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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.