Finding the Fourth Proportional to 455.23, 628.26 and 258.79
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Solution
The fourth proportional to 455.23, 628.26 and 258.79 is: 357.15
Step by Step Solution
- Step 1: Write the proportion equation
455.23 : 628.26 = 258.79 : x - Step 2: Convert to fraction form
455.23/628.26 = 258.79/x - Step 3: Cross multiply
455.23x = 628.26 × 258.79 - Step 4: Simplify right side
455.23x = 162,587.41 - Step 5: Solve for x
x = 162,587.41/455.23 - Step 6: Final answer
x = 357.15
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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.