Home / 1,323.08-1,986.06-554.12

Finding the Fourth Proportional to 1,323.08, 1,986.06 and 554.12

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Solution

The fourth proportional to 1,323.08, 1,986.06 and 554.12 is: 831.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.08 : 1,986.06 = 554.12 : x
  2. Step 2: Convert to fraction form
    1,323.08/1,986.06 = 554.12/x
  3. Step 3: Cross multiply
    1,323.08x = 1,986.06 × 554.12
  4. Step 4: Simplify right side
    1,323.08x = 1,100,515.57
  5. Step 5: Solve for x
    x = 1,100,515.57/1,323.08
  6. Step 6: Final answer
    x = 831.78

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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.