Home / 1,036.80-1,555.20-267.36

Finding the Fourth Proportional to 1,036.80, 1,555.20 and 267.36

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Solution

The fourth proportional to 1,036.80, 1,555.20 and 267.36 is: 401.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036.80 : 1,555.20 = 267.36 : x
  2. Step 2: Convert to fraction form
    1,036.80/1,555.20 = 267.36/x
  3. Step 3: Cross multiply
    1,036.80x = 1,555.20 × 267.36
  4. Step 4: Simplify right side
    1,036.80x = 415,798.27
  5. Step 5: Solve for x
    x = 415,798.27/1,036.80
  6. Step 6: Final answer
    x = 401.04

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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.