Home / 1,268.28-1,900.50-498.36

Finding the Fourth Proportional to 1,268.28, 1,900.50 and 498.36

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Solution

The fourth proportional to 1,268.28, 1,900.50 and 498.36 is: 746.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268.28 : 1,900.50 = 498.36 : x
  2. Step 2: Convert to fraction form
    1,268.28/1,900.50 = 498.36/x
  3. Step 3: Cross multiply
    1,268.28x = 1,900.50 × 498.36
  4. Step 4: Simplify right side
    1,268.28x = 947,133.18
  5. Step 5: Solve for x
    x = 947,133.18/1,268.28
  6. Step 6: Final answer
    x = 746.79

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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.