Finding the Fourth Proportional to 40.21, 60.59 and 38.99
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Solution
The fourth proportional to 40.21, 60.59 and 38.99 is: 58.76
Step by Step Solution
- Step 1: Write the proportion equation
40.21 : 60.59 = 38.99 : x - Step 2: Convert to fraction form
40.21/60.59 = 38.99/x - Step 3: Cross multiply
40.21x = 60.59 × 38.99 - Step 4: Simplify right side
40.21x = 2,362.65 - Step 5: Solve for x
x = 2,362.65/40.21 - Step 6: Final answer
x = 58.76
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.