Finding the Fourth Proportional to 42.98, 59.34 and 28.99
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Solution
The fourth proportional to 42.98, 59.34 and 28.99 is: 40.02
Step by Step Solution
- Step 1: Write the proportion equation
42.98 : 59.34 = 28.99 : x - Step 2: Convert to fraction form
42.98/59.34 = 28.99/x - Step 3: Cross multiply
42.98x = 59.34 × 28.99 - Step 4: Simplify right side
42.98x = 1,720.27 - Step 5: Solve for x
x = 1,720.27/42.98 - Step 6: Final answer
x = 40.02
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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.