Finding the Fourth Proportional to 42.30, 58.29 and 29.99
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Solution
The fourth proportional to 42.30, 58.29 and 29.99 is: 41.32
Step by Step Solution
- Step 1: Write the proportion equation
42.30 : 58.29 = 29.99 : x - Step 2: Convert to fraction form
42.30/58.29 = 29.99/x - Step 3: Cross multiply
42.30x = 58.29 × 29.99 - Step 4: Simplify right side
42.30x = 1,747.83 - Step 5: Solve for x
x = 1,747.83/42.30 - Step 6: Final answer
x = 41.32
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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.