Finding the Fourth Proportional to 48.99, 67.60 and 29.31
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Solution
The fourth proportional to 48.99, 67.60 and 29.31 is: 40.45
Step by Step Solution
- Step 1: Write the proportion equation
48.99 : 67.60 = 29.31 : x - Step 2: Convert to fraction form
48.99/67.60 = 29.31/x - Step 3: Cross multiply
48.99x = 67.60 × 29.31 - Step 4: Simplify right side
48.99x = 1,981.45 - Step 5: Solve for x
x = 1,981.45/48.99 - Step 6: Final answer
x = 40.45
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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.