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Finding the Fourth Proportional to 1,672.64, 2,508.99 and 440.06

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Solution

The fourth proportional to 1,672.64, 2,508.99 and 440.06 is: 660.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,672.64 : 2,508.99 = 440.06 : x
  2. Step 2: Convert to fraction form
    1,672.64/2,508.99 = 440.06/x
  3. Step 3: Cross multiply
    1,672.64x = 2,508.99 × 440.06
  4. Step 4: Simplify right side
    1,672.64x = 1,104,103.94
  5. Step 5: Solve for x
    x = 1,104,103.94/1,672.64
  6. Step 6: Final answer
    x = 660.10

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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.