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Finding the Fourth Proportional to 535.40, 738.86 and 299.34

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Solution

The fourth proportional to 535.40, 738.86 and 299.34 is: 413.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.40 : 738.86 = 299.34 : x
  2. Step 2: Convert to fraction form
    535.40/738.86 = 299.34/x
  3. Step 3: Cross multiply
    535.40x = 738.86 × 299.34
  4. Step 4: Simplify right side
    535.40x = 221,169.25
  5. Step 5: Solve for x
    x = 221,169.25/535.40
  6. Step 6: Final answer
    x = 413.09

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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.