Finding the Fourth Proportional to 93.74, 140.47 and 47.99
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Solution
The fourth proportional to 93.74, 140.47 and 47.99 is: 71.91
Step by Step Solution
- Step 1: Write the proportion equation
93.74 : 140.47 = 47.99 : x - Step 2: Convert to fraction form
93.74/140.47 = 47.99/x - Step 3: Cross multiply
93.74x = 140.47 × 47.99 - Step 4: Simplify right side
93.74x = 6,741.16 - Step 5: Solve for x
x = 6,741.16/93.74 - Step 6: Final answer
x = 71.91
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.