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Finding the Fourth Proportional to 439.25, 657.23 and 336.38

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Solution

The fourth proportional to 439.25, 657.23 and 336.38 is: 503.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.25 : 657.23 = 336.38 : x
  2. Step 2: Convert to fraction form
    439.25/657.23 = 336.38/x
  3. Step 3: Cross multiply
    439.25x = 657.23 × 336.38
  4. Step 4: Simplify right side
    439.25x = 221,074.06
  5. Step 5: Solve for x
    x = 221,074.06/439.25
  6. Step 6: Final answer
    x = 503.30

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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.