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Finding the Fourth Proportional to 1,634.91, 2,453.04 and 660.76

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Solution

The fourth proportional to 1,634.91, 2,453.04 and 660.76 is: 991.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,634.91 : 2,453.04 = 660.76 : x
  2. Step 2: Convert to fraction form
    1,634.91/2,453.04 = 660.76/x
  3. Step 3: Cross multiply
    1,634.91x = 2,453.04 × 660.76
  4. Step 4: Simplify right side
    1,634.91x = 1,620,870.71
  5. Step 5: Solve for x
    x = 1,620,870.71/1,634.91
  6. Step 6: Final answer
    x = 991.41

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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.