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Finding the Fourth Proportional to 845.58, 1,167.21 and 496.56

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Solution

The fourth proportional to 845.58, 1,167.21 and 496.56 is: 685.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.58 : 1,167.21 = 496.56 : x
  2. Step 2: Convert to fraction form
    845.58/1,167.21 = 496.56/x
  3. Step 3: Cross multiply
    845.58x = 1,167.21 × 496.56
  4. Step 4: Simplify right side
    845.58x = 579,589.80
  5. Step 5: Solve for x
    x = 579,589.80/845.58
  6. Step 6: Final answer
    x = 685.43

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1.5x scale

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.