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Finding the Fourth Proportional to 439.75, 657.98 and 336.88

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Solution

The fourth proportional to 439.75, 657.98 and 336.88 is: 504.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.75 : 657.98 = 336.88 : x
  2. Step 2: Convert to fraction form
    439.75/657.98 = 336.88/x
  3. Step 3: Cross multiply
    439.75x = 657.98 × 336.88
  4. Step 4: Simplify right side
    439.75x = 221,655.33
  5. Step 5: Solve for x
    x = 221,655.33/439.75
  6. Step 6: Final answer
    x = 504.05

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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.