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Finding the Fourth Proportional to 573.75, 860.79 and 330.45

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Solution

The fourth proportional to 573.75, 860.79 and 330.45 is: 495.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.75 : 860.79 = 330.45 : x
  2. Step 2: Convert to fraction form
    573.75/860.79 = 330.45/x
  3. Step 3: Cross multiply
    573.75x = 860.79 × 330.45
  4. Step 4: Simplify right side
    573.75x = 284,448.06
  5. Step 5: Solve for x
    x = 284,448.06/573.75
  6. Step 6: Final answer
    x = 495.77

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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.