Finding the Fourth Proportional to 42.16, 58.09 and 29.05
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Solution
The fourth proportional to 42.16, 58.09 and 29.05 is: 40.03
Step by Step Solution
- Step 1: Write the proportion equation
42.16 : 58.09 = 29.05 : x - Step 2: Convert to fraction form
42.16/58.09 = 29.05/x - Step 3: Cross multiply
42.16x = 58.09 × 29.05 - Step 4: Simplify right side
42.16x = 1,687.41 - Step 5: Solve for x
x = 1,687.41/42.16 - Step 6: Final answer
x = 40.03
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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.