Home / 1,358.28-2,037.64-492.80

Finding the Fourth Proportional to 1,358.28, 2,037.64 and 492.80

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Solution

The fourth proportional to 1,358.28, 2,037.64 and 492.80 is: 739.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,358.28 : 2,037.64 = 492.80 : x
  2. Step 2: Convert to fraction form
    1,358.28/2,037.64 = 492.80/x
  3. Step 3: Cross multiply
    1,358.28x = 2,037.64 × 492.80
  4. Step 4: Simplify right side
    1,358.28x = 1,004,148.99
  5. Step 5: Solve for x
    x = 1,004,148.99/1,358.28
  6. Step 6: Final answer
    x = 739.28

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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.