Finding the Fourth Proportional to 42.33, 63.54 and 30.99
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Solution
The fourth proportional to 42.33, 63.54 and 30.99 is: 46.52
Step by Step Solution
- Step 1: Write the proportion equation
42.33 : 63.54 = 30.99 : x - Step 2: Convert to fraction form
42.33/63.54 = 30.99/x - Step 3: Cross multiply
42.33x = 63.54 × 30.99 - Step 4: Simplify right side
42.33x = 1,968.79 - Step 5: Solve for x
x = 1,968.79/42.33 - Step 6: Final answer
x = 46.52
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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.