Finding the Fourth Proportional to 42.88, 58.91 and 38.49
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Solution
The fourth proportional to 42.88, 58.91 and 38.49 is: 52.88
Step by Step Solution
- Step 1: Write the proportion equation
42.88 : 58.91 = 38.49 : x - Step 2: Convert to fraction form
42.88/58.91 = 38.49/x - Step 3: Cross multiply
42.88x = 58.91 × 38.49 - Step 4: Simplify right side
42.88x = 2,267.54 - Step 5: Solve for x
x = 2,267.54/42.88 - Step 6: Final answer
x = 52.88
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.