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Finding the Fourth Proportional to 490.20, 675.02 and 424.60

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Solution

The fourth proportional to 490.20, 675.02 and 424.60 is: 584.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.20 : 675.02 = 424.60 : x
  2. Step 2: Convert to fraction form
    490.20/675.02 = 424.60/x
  3. Step 3: Cross multiply
    490.20x = 675.02 × 424.60
  4. Step 4: Simplify right side
    490.20x = 286,613.49
  5. Step 5: Solve for x
    x = 286,613.49/490.20
  6. Step 6: Final answer
    x = 584.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.