Finding the Fourth Proportional to 42.39, 58.49 and 22.98
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Solution
The fourth proportional to 42.39, 58.49 and 22.98 is: 31.71
Step by Step Solution
- Step 1: Write the proportion equation
42.39 : 58.49 = 22.98 : x - Step 2: Convert to fraction form
42.39/58.49 = 22.98/x - Step 3: Cross multiply
42.39x = 58.49 × 22.98 - Step 4: Simplify right side
42.39x = 1,344.23 - Step 5: Solve for x
x = 1,344.23/42.39 - Step 6: Final answer
x = 31.71
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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.