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Finding the Fourth Proportional to 654.42, 983.46 and 330

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Solution

The fourth proportional to 654.42, 983.46 and 330 is: 495.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.42 : 983.46 = 330 : x
  2. Step 2: Convert to fraction form
    654.42/983.46 = 330/x
  3. Step 3: Cross multiply
    654.42x = 983.46 × 330
  4. Step 4: Simplify right side
    654.42x = 324,541.80
  5. Step 5: Solve for x
    x = 324,541.80/654.42
  6. Step 6: Final answer
    x = 495.92

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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.