Home / 1,149.40-1,724.37-327.68

Finding the Fourth Proportional to 1,149.40, 1,724.37 and 327.68

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Solution

The fourth proportional to 1,149.40, 1,724.37 and 327.68 is: 491.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,149.40 : 1,724.37 = 327.68 : x
  2. Step 2: Convert to fraction form
    1,149.40/1,724.37 = 327.68/x
  3. Step 3: Cross multiply
    1,149.40x = 1,724.37 × 327.68
  4. Step 4: Simplify right side
    1,149.40x = 565,039.92
  5. Step 5: Solve for x
    x = 565,039.92/1,149.40
  6. Step 6: Final answer
    x = 491.60

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Double scale
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1.5x scale

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.