Finding the Fourth Proportional to 68.13, 93.99 and 45.99
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Solution
The fourth proportional to 68.13, 93.99 and 45.99 is: 63.45
Step by Step Solution
- Step 1: Write the proportion equation
68.13 : 93.99 = 45.99 : x - Step 2: Convert to fraction form
68.13/93.99 = 45.99/x - Step 3: Cross multiply
68.13x = 93.99 × 45.99 - Step 4: Simplify right side
68.13x = 4,322.60 - Step 5: Solve for x
x = 4,322.60/68.13 - Step 6: Final answer
x = 63.45
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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.