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Finding the Fourth Proportional to 909.57, 1,255.73 and 599.97

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Solution

The fourth proportional to 909.57, 1,255.73 and 599.97 is: 828.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    909.57 : 1,255.73 = 599.97 : x
  2. Step 2: Convert to fraction form
    909.57/1,255.73 = 599.97/x
  3. Step 3: Cross multiply
    909.57x = 1,255.73 × 599.97
  4. Step 4: Simplify right side
    909.57x = 753,397.33
  5. Step 5: Solve for x
    x = 753,397.33/909.57
  6. Step 6: Final answer
    x = 828.30

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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.