Finding the Fourth Proportional to 40.64, 60.12 and 40.55
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Solution
The fourth proportional to 40.64, 60.12 and 40.55 is: 59.99
Step by Step Solution
- Step 1: Write the proportion equation
40.64 : 60.12 = 40.55 : x - Step 2: Convert to fraction form
40.64/60.12 = 40.55/x - Step 3: Cross multiply
40.64x = 60.12 × 40.55 - Step 4: Simplify right side
40.64x = 2,437.57 - Step 5: Solve for x
x = 2,437.57/40.64 - Step 6: Final answer
x = 59.99
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Why These Related Problems?
These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.