Finding the Fourth Proportional to 42.23, 63.38 and 22.99
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Solution
The fourth proportional to 42.23, 63.38 and 22.99 is: 34.49
Step by Step Solution
- Step 1: Write the proportion equation
42.23 : 63.38 = 22.99 : x - Step 2: Convert to fraction form
42.23/63.38 = 22.99/x - Step 3: Cross multiply
42.23x = 63.38 × 22.99 - Step 4: Simplify right side
42.23x = 1,456.67 - Step 5: Solve for x
x = 1,456.67/42.23 - Step 6: Final answer
x = 34.49
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.