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Finding the Fourth Proportional to 573.54, 860.88 and 330.30

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Solution

The fourth proportional to 573.54, 860.88 and 330.30 is: 495.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.54 : 860.88 = 330.30 : x
  2. Step 2: Convert to fraction form
    573.54/860.88 = 330.30/x
  3. Step 3: Cross multiply
    573.54x = 860.88 × 330.30
  4. Step 4: Simplify right side
    573.54x = 284,348.66
  5. Step 5: Solve for x
    x = 284,348.66/573.54
  6. Step 6: Final answer
    x = 495.78

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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.