Finding the Fourth Proportional to 60.90, 90.74 and 57.99
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Solution
The fourth proportional to 60.90, 90.74 and 57.99 is: 86.40
Step by Step Solution
- Step 1: Write the proportion equation
60.90 : 90.74 = 57.99 : x - Step 2: Convert to fraction form
60.90/90.74 = 57.99/x - Step 3: Cross multiply
60.90x = 90.74 × 57.99 - Step 4: Simplify right side
60.90x = 5,262.01 - Step 5: Solve for x
x = 5,262.01/60.90 - Step 6: Final answer
x = 86.40
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.