Finding the Fourth Proportional to 42.74, 58.98 and 27.98
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Solution
The fourth proportional to 42.74, 58.98 and 27.98 is: 38.61
Step by Step Solution
- Step 1: Write the proportion equation
42.74 : 58.98 = 27.98 : x - Step 2: Convert to fraction form
42.74/58.98 = 27.98/x - Step 3: Cross multiply
42.74x = 58.98 × 27.98 - Step 4: Simplify right side
42.74x = 1,650.26 - Step 5: Solve for x
x = 1,650.26/42.74 - Step 6: Final answer
x = 38.61
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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.