Home / 1,359.18-2,039.24-629.30

Finding the Fourth Proportional to 1,359.18, 2,039.24 and 629.30

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Solution

The fourth proportional to 1,359.18, 2,039.24 and 629.30 is: 944.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,359.18 : 2,039.24 = 629.30 : x
  2. Step 2: Convert to fraction form
    1,359.18/2,039.24 = 629.30/x
  3. Step 3: Cross multiply
    1,359.18x = 2,039.24 × 629.30
  4. Step 4: Simplify right side
    1,359.18x = 1,283,300.40
  5. Step 5: Solve for x
    x = 1,283,300.40/1,359.18
  6. Step 6: Final answer
    x = 944.17

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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.