Finding the Fourth Proportional to 39.98, 55.04 and 29.05
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Solution
The fourth proportional to 39.98, 55.04 and 29.05 is: 39.99
Step by Step Solution
- Step 1: Write the proportion equation
39.98 : 55.04 = 29.05 : x - Step 2: Convert to fraction form
39.98/55.04 = 29.05/x - Step 3: Cross multiply
39.98x = 55.04 × 29.05 - Step 4: Simplify right side
39.98x = 1,598.91 - Step 5: Solve for x
x = 1,598.91/39.98 - Step 6: Final answer
x = 39.99
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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.