Home / 1,086.33-1,629.46-306.34

Finding the Fourth Proportional to 1,086.33, 1,629.46 and 306.34

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Solution

The fourth proportional to 1,086.33, 1,629.46 and 306.34 is: 459.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086.33 : 1,629.46 = 306.34 : x
  2. Step 2: Convert to fraction form
    1,086.33/1,629.46 = 306.34/x
  3. Step 3: Cross multiply
    1,086.33x = 1,629.46 × 306.34
  4. Step 4: Simplify right side
    1,086.33x = 499,168.78
  5. Step 5: Solve for x
    x = 499,168.78/1,086.33
  6. Step 6: Final answer
    x = 459.50

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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.