Finding the Fourth Proportional to 42.18, 58.12 and 33.45
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Solution
The fourth proportional to 42.18, 58.12 and 33.45 is: 46.09
Step by Step Solution
- Step 1: Write the proportion equation
42.18 : 58.12 = 33.45 : x - Step 2: Convert to fraction form
42.18/58.12 = 33.45/x - Step 3: Cross multiply
42.18x = 58.12 × 33.45 - Step 4: Simplify right side
42.18x = 1,944.11 - Step 5: Solve for x
x = 1,944.11/42.18 - Step 6: Final answer
x = 46.09
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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.