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Finding the Fourth Proportional to 845.55, 1,268.43 and 297.65

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Solution

The fourth proportional to 845.55, 1,268.43 and 297.65 is: 446.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.55 : 1,268.43 = 297.65 : x
  2. Step 2: Convert to fraction form
    845.55/1,268.43 = 297.65/x
  3. Step 3: Cross multiply
    845.55x = 1,268.43 × 297.65
  4. Step 4: Simplify right side
    845.55x = 377,550.24
  5. Step 5: Solve for x
    x = 377,550.24/845.55
  6. Step 6: Final answer
    x = 446.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.