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Finding the Fourth Proportional to 960.52, 1,439.90 and 344.08

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Solution

The fourth proportional to 960.52, 1,439.90 and 344.08 is: 515.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    960.52 : 1,439.90 = 344.08 : x
  2. Step 2: Convert to fraction form
    960.52/1,439.90 = 344.08/x
  3. Step 3: Cross multiply
    960.52x = 1,439.90 × 344.08
  4. Step 4: Simplify right side
    960.52x = 495,440.79
  5. Step 5: Solve for x
    x = 495,440.79/960.52
  6. Step 6: Final answer
    x = 515.80

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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.