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Finding the Fourth Proportional to 535.15, 738.51 and 299.09

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Solution

The fourth proportional to 535.15, 738.51 and 299.09 is: 412.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.15 : 738.51 = 299.09 : x
  2. Step 2: Convert to fraction form
    535.15/738.51 = 299.09/x
  3. Step 3: Cross multiply
    535.15x = 738.51 × 299.09
  4. Step 4: Simplify right side
    535.15x = 220,880.96
  5. Step 5: Solve for x
    x = 220,880.96/535.15
  6. Step 6: Final answer
    x = 412.75

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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.