Finding the Fourth Proportional to 42.42, 58.56 and 29.99
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Solution
The fourth proportional to 42.42, 58.56 and 29.99 is: 41.39
Step by Step Solution
- Step 1: Write the proportion equation
42.42 : 58.56 = 29.99 : x - Step 2: Convert to fraction form
42.42/58.56 = 29.99/x - Step 3: Cross multiply
42.42x = 58.56 × 29.99 - Step 4: Simplify right side
42.42x = 1,755.77 - Step 5: Solve for x
x = 1,755.77/42.42 - Step 6: Final answer
x = 41.39
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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.