Home / 1,359.28-2,039.00-385.46

Finding the Fourth Proportional to 1,359.28, 2,039.00 and 385.46

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Solution

The fourth proportional to 1,359.28, 2,039.00 and 385.46 is: 578.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,359.28 : 2,039.00 = 385.46 : x
  2. Step 2: Convert to fraction form
    1,359.28/2,039.00 = 385.46/x
  3. Step 3: Cross multiply
    1,359.28x = 2,039.00 × 385.46
  4. Step 4: Simplify right side
    1,359.28x = 785,949.55
  5. Step 5: Solve for x
    x = 785,949.55/1,359.28
  6. Step 6: Final answer
    x = 578.21

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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.