Home / 1,336.72-2,004.56-459.05

Finding the Fourth Proportional to 1,336.72, 2,004.56 and 459.05

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Solution

The fourth proportional to 1,336.72, 2,004.56 and 459.05 is: 688.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,336.72 : 2,004.56 = 459.05 : x
  2. Step 2: Convert to fraction form
    1,336.72/2,004.56 = 459.05/x
  3. Step 3: Cross multiply
    1,336.72x = 2,004.56 × 459.05
  4. Step 4: Simplify right side
    1,336.72x = 920,192.66
  5. Step 5: Solve for x
    x = 920,192.66/1,336.72
  6. Step 6: Final answer
    x = 688.40

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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.