Home / 1,206.27-1,809.40-621.44

Finding the Fourth Proportional to 1,206.27, 1,809.40 and 621.44

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Solution

The fourth proportional to 1,206.27, 1,809.40 and 621.44 is: 932.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,206.27 : 1,809.40 = 621.44 : x
  2. Step 2: Convert to fraction form
    1,206.27/1,809.40 = 621.44/x
  3. Step 3: Cross multiply
    1,206.27x = 1,809.40 × 621.44
  4. Step 4: Simplify right side
    1,206.27x = 1,124,433.54
  5. Step 5: Solve for x
    x = 1,124,433.54/1,206.27
  6. Step 6: Final answer
    x = 932.16

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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.