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Finding the Fourth Proportional to 573.28, 860.49 and 299.30

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Solution

The fourth proportional to 573.28, 860.49 and 299.30 is: 449.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.28 : 860.49 = 299.30 : x
  2. Step 2: Convert to fraction form
    573.28/860.49 = 299.30/x
  3. Step 3: Cross multiply
    573.28x = 860.49 × 299.30
  4. Step 4: Simplify right side
    573.28x = 257,540.35
  5. Step 5: Solve for x
    x = 257,540.35/573.28
  6. Step 6: Final answer
    x = 449.24

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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.