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Finding the Fourth Proportional to 2,423.60, 3,635.40 and 668.60

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Solution

The fourth proportional to 2,423.60, 3,635.40 and 668.60 is: 1,002.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,423.60 : 3,635.40 = 668.60 : x
  2. Step 2: Convert to fraction form
    2,423.60/3,635.40 = 668.60/x
  3. Step 3: Cross multiply
    2,423.60x = 3,635.40 × 668.60
  4. Step 4: Simplify right side
    2,423.60x = 2,430,628.44
  5. Step 5: Solve for x
    x = 2,430,628.44/2,423.60
  6. Step 6: Final answer
    x = 1,002.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.