Finding the Fourth Proportional to 29.16, 39.89 and 28.99
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Solution
The fourth proportional to 29.16, 39.89 and 28.99 is: 39.66
Step by Step Solution
- Step 1: Write the proportion equation
29.16 : 39.89 = 28.99 : x - Step 2: Convert to fraction form
29.16/39.89 = 28.99/x - Step 3: Cross multiply
29.16x = 39.89 × 28.99 - Step 4: Simplify right side
29.16x = 1,156.53 - Step 5: Solve for x
x = 1,156.53/29.16 - Step 6: Final answer
x = 39.66
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.