Home / 1,358.12-2,037.24-492.20

Finding the Fourth Proportional to 1,358.12, 2,037.24 and 492.20

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Solution

The fourth proportional to 1,358.12, 2,037.24 and 492.20 is: 738.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,358.12 : 2,037.24 = 492.20 : x
  2. Step 2: Convert to fraction form
    1,358.12/2,037.24 = 492.20/x
  3. Step 3: Cross multiply
    1,358.12x = 2,037.24 × 492.20
  4. Step 4: Simplify right side
    1,358.12x = 1,002,729.53
  5. Step 5: Solve for x
    x = 1,002,729.53/1,358.12
  6. Step 6: Final answer
    x = 738.32

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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.