Finding the Fourth Proportional to 88.36, 121.93 and 49.02
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Solution
The fourth proportional to 88.36, 121.93 and 49.02 is: 67.65
Step by Step Solution
- Step 1: Write the proportion equation
88.36 : 121.93 = 49.02 : x - Step 2: Convert to fraction form
88.36/121.93 = 49.02/x - Step 3: Cross multiply
88.36x = 121.93 × 49.02 - Step 4: Simplify right side
88.36x = 5,977.21 - Step 5: Solve for x
x = 5,977.21/88.36 - Step 6: Final answer
x = 67.65
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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.