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Finding the Fourth Proportional to 484.74, 726.30 and 339.75

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Solution

The fourth proportional to 484.74, 726.30 and 339.75 is: 509.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.74 : 726.30 = 339.75 : x
  2. Step 2: Convert to fraction form
    484.74/726.30 = 339.75/x
  3. Step 3: Cross multiply
    484.74x = 726.30 × 339.75
  4. Step 4: Simplify right side
    484.74x = 246,760.43
  5. Step 5: Solve for x
    x = 246,760.43/484.74
  6. Step 6: Final answer
    x = 509.06

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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.