Home / 1,149.40-1,724.10-327.70

Finding the Fourth Proportional to 1,149.40, 1,724.10 and 327.70

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Solution

The fourth proportional to 1,149.40, 1,724.10 and 327.70 is: 491.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,149.40 : 1,724.10 = 327.70 : x
  2. Step 2: Convert to fraction form
    1,149.40/1,724.10 = 327.70/x
  3. Step 3: Cross multiply
    1,149.40x = 1,724.10 × 327.70
  4. Step 4: Simplify right side
    1,149.40x = 564,987.57
  5. Step 5: Solve for x
    x = 564,987.57/1,149.40
  6. Step 6: Final answer
    x = 491.55

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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.