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Finding the Fourth Proportional to 573.54, 860.76 and 299.71

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Solution

The fourth proportional to 573.54, 860.76 and 299.71 is: 449.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.54 : 860.76 = 299.71 : x
  2. Step 2: Convert to fraction form
    573.54/860.76 = 299.71/x
  3. Step 3: Cross multiply
    573.54x = 860.76 × 299.71
  4. Step 4: Simplify right side
    573.54x = 257,978.38
  5. Step 5: Solve for x
    x = 257,978.38/573.54
  6. Step 6: Final answer
    x = 449.80

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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.