Home / 1,267.12-1,901.06-445.40

Finding the Fourth Proportional to 1,267.12, 1,901.06 and 445.40

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Solution

The fourth proportional to 1,267.12, 1,901.06 and 445.40 is: 668.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,267.12 : 1,901.06 = 445.40 : x
  2. Step 2: Convert to fraction form
    1,267.12/1,901.06 = 445.40/x
  3. Step 3: Cross multiply
    1,267.12x = 1,901.06 × 445.40
  4. Step 4: Simplify right side
    1,267.12x = 846,732.12
  5. Step 5: Solve for x
    x = 846,732.12/1,267.12
  6. Step 6: Final answer
    x = 668.23

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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.