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Finding the Fourth Proportional to 905.76, 1,250.13 and 574.58

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Solution

The fourth proportional to 905.76, 1,250.13 and 574.58 is: 793.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    905.76 : 1,250.13 = 574.58 : x
  2. Step 2: Convert to fraction form
    905.76/1,250.13 = 574.58/x
  3. Step 3: Cross multiply
    905.76x = 1,250.13 × 574.58
  4. Step 4: Simplify right side
    905.76x = 718,293.44
  5. Step 5: Solve for x
    x = 718,293.44/905.76
  6. Step 6: Final answer
    x = 793.03

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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.