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Finding the Fourth Proportional to 535.36, 738.80 and 338.99

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Solution

The fourth proportional to 535.36, 738.80 and 338.99 is: 467.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.36 : 738.80 = 338.99 : x
  2. Step 2: Convert to fraction form
    535.36/738.80 = 338.99/x
  3. Step 3: Cross multiply
    535.36x = 738.80 × 338.99
  4. Step 4: Simplify right side
    535.36x = 250,440.74
  5. Step 5: Solve for x
    x = 250,440.74/535.36
  6. Step 6: Final answer
    x = 467.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.