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Finding the Fourth Proportional to 1,002.60, 1,383.24 and 609.48

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Solution

The fourth proportional to 1,002.60, 1,383.24 and 609.48 is: 840.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,002.60 : 1,383.24 = 609.48 : x
  2. Step 2: Convert to fraction form
    1,002.60/1,383.24 = 609.48/x
  3. Step 3: Cross multiply
    1,002.60x = 1,383.24 × 609.48
  4. Step 4: Simplify right side
    1,002.60x = 843,057.12
  5. Step 5: Solve for x
    x = 843,057.12/1,002.60
  6. Step 6: Final answer
    x = 840.87

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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.