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Finding the Fourth Proportional to 1,359.14, 2,039.06 and 629.24

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Solution

The fourth proportional to 1,359.14, 2,039.06 and 629.24 is: 944.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,359.14 : 2,039.06 = 629.24 : x
  2. Step 2: Convert to fraction form
    1,359.14/2,039.06 = 629.24/x
  3. Step 3: Cross multiply
    1,359.14x = 2,039.06 × 629.24
  4. Step 4: Simplify right side
    1,359.14x = 1,283,044.77
  5. Step 5: Solve for x
    x = 1,283,044.77/1,359.14
  6. Step 6: Final answer
    x = 944.02

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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.