Finding the Fourth Proportional to 42.30, 63.50 and 16.65
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Solution
The fourth proportional to 42.30, 63.50 and 16.65 is: 24.99
Step by Step Solution
- Step 1: Write the proportion equation
42.30 : 63.50 = 16.65 : x - Step 2: Convert to fraction form
42.30/63.50 = 16.65/x - Step 3: Cross multiply
42.30x = 63.50 × 16.65 - Step 4: Simplify right side
42.30x = 1,057.19 - Step 5: Solve for x
x = 1,057.19/42.30 - Step 6: Final answer
x = 24.99
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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.