Home / 1,451.20-2,177.10-629.68

Finding the Fourth Proportional to 1,451.20, 2,177.10 and 629.68

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Solution

The fourth proportional to 1,451.20, 2,177.10 and 629.68 is: 944.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,451.20 : 2,177.10 = 629.68 : x
  2. Step 2: Convert to fraction form
    1,451.20/2,177.10 = 629.68/x
  3. Step 3: Cross multiply
    1,451.20x = 2,177.10 × 629.68
  4. Step 4: Simplify right side
    1,451.20x = 1,370,876.33
  5. Step 5: Solve for x
    x = 1,370,876.33/1,451.20
  6. Step 6: Final answer
    x = 944.65

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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.