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Finding the Fourth Proportional to 1,660.12, 2,491.26 and 736.28

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Solution

The fourth proportional to 1,660.12, 2,491.26 and 736.28 is: 1,104.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,660.12 : 2,491.26 = 736.28 : x
  2. Step 2: Convert to fraction form
    1,660.12/2,491.26 = 736.28/x
  3. Step 3: Cross multiply
    1,660.12x = 2,491.26 × 736.28
  4. Step 4: Simplify right side
    1,660.12x = 1,834,264.91
  5. Step 5: Solve for x
    x = 1,834,264.91/1,660.12
  6. Step 6: Final answer
    x = 1,104.90

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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.