Home / 1,086.55-1,629.83-306.55

Finding the Fourth Proportional to 1,086.55, 1,629.83 and 306.55

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Solution

The fourth proportional to 1,086.55, 1,629.83 and 306.55 is: 459.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086.55 : 1,629.83 = 306.55 : x
  2. Step 2: Convert to fraction form
    1,086.55/1,629.83 = 306.55/x
  3. Step 3: Cross multiply
    1,086.55x = 1,629.83 × 306.55
  4. Step 4: Simplify right side
    1,086.55x = 499,624.89
  5. Step 5: Solve for x
    x = 499,624.89/1,086.55
  6. Step 6: Final answer
    x = 459.83

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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.