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Finding the Fourth Proportional to 482.75, 723.97 and 309.61

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Solution

The fourth proportional to 482.75, 723.97 and 309.61 is: 464.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.75 : 723.97 = 309.61 : x
  2. Step 2: Convert to fraction form
    482.75/723.97 = 309.61/x
  3. Step 3: Cross multiply
    482.75x = 723.97 × 309.61
  4. Step 4: Simplify right side
    482.75x = 224,148.35
  5. Step 5: Solve for x
    x = 224,148.35/482.75
  6. Step 6: Final answer
    x = 464.32

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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.