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Finding the Fourth Proportional to 629.60, 868.92 and 609.44

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Solution

The fourth proportional to 629.60, 868.92 and 609.44 is: 841.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.60 : 868.92 = 609.44 : x
  2. Step 2: Convert to fraction form
    629.60/868.92 = 609.44/x
  3. Step 3: Cross multiply
    629.60x = 868.92 × 609.44
  4. Step 4: Simplify right side
    629.60x = 529,554.60
  5. Step 5: Solve for x
    x = 529,554.60/629.60
  6. Step 6: Final answer
    x = 841.10

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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.