Finding the Fourth Proportional to 78.98, 108.99 and 43.53
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Solution
The fourth proportional to 78.98, 108.99 and 43.53 is: 60.07
Step by Step Solution
- Step 1: Write the proportion equation
78.98 : 108.99 = 43.53 : x - Step 2: Convert to fraction form
78.98/108.99 = 43.53/x - Step 3: Cross multiply
78.98x = 108.99 × 43.53 - Step 4: Simplify right side
78.98x = 4,744.33 - Step 5: Solve for x
x = 4,744.33/78.98 - Step 6: Final answer
x = 60.07
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.