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Finding the Fourth Proportional to 483.12, 723.06 and 309.96

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Solution

The fourth proportional to 483.12, 723.06 and 309.96 is: 463.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.12 : 723.06 = 309.96 : x
  2. Step 2: Convert to fraction form
    483.12/723.06 = 309.96/x
  3. Step 3: Cross multiply
    483.12x = 723.06 × 309.96
  4. Step 4: Simplify right side
    483.12x = 224,119.68
  5. Step 5: Solve for x
    x = 224,119.68/483.12
  6. Step 6: Final answer
    x = 463.90

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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.