Finding the Fourth Proportional to 42.99, 59.35 and 28.24
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Solution
The fourth proportional to 42.99, 59.35 and 28.24 is: 38.99
Step by Step Solution
- Step 1: Write the proportion equation
42.99 : 59.35 = 28.24 : x - Step 2: Convert to fraction form
42.99/59.35 = 28.24/x - Step 3: Cross multiply
42.99x = 59.35 × 28.24 - Step 4: Simplify right side
42.99x = 1,675.90 - Step 5: Solve for x
x = 1,675.90/42.99 - Step 6: Final answer
x = 38.99
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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.