Home / 1,336.50-2,004.91-459.09

Finding the Fourth Proportional to 1,336.50, 2,004.91 and 459.09

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Solution

The fourth proportional to 1,336.50, 2,004.91 and 459.09 is: 688.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,336.50 : 2,004.91 = 459.09 : x
  2. Step 2: Convert to fraction form
    1,336.50/2,004.91 = 459.09/x
  3. Step 3: Cross multiply
    1,336.50x = 2,004.91 × 459.09
  4. Step 4: Simplify right side
    1,336.50x = 920,432.98
  5. Step 5: Solve for x
    x = 920,432.98/1,336.50
  6. Step 6: Final answer
    x = 688.69

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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.