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Finding the Fourth Proportional to 902.86, 1,245.90 and 504.52

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Solution

The fourth proportional to 902.86, 1,245.90 and 504.52 is: 696.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    902.86 : 1,245.90 = 504.52 : x
  2. Step 2: Convert to fraction form
    902.86/1,245.90 = 504.52/x
  3. Step 3: Cross multiply
    902.86x = 1,245.90 × 504.52
  4. Step 4: Simplify right side
    902.86x = 628,581.47
  5. Step 5: Solve for x
    x = 628,581.47/902.86
  6. Step 6: Final answer
    x = 696.21

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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.