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Finding the Fourth Proportional to 483.70, 724.49 and 300.71

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Solution

The fourth proportional to 483.70, 724.49 and 300.71 is: 450.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.70 : 724.49 = 300.71 : x
  2. Step 2: Convert to fraction form
    483.70/724.49 = 300.71/x
  3. Step 3: Cross multiply
    483.70x = 724.49 × 300.71
  4. Step 4: Simplify right side
    483.70x = 217,856.26
  5. Step 5: Solve for x
    x = 217,856.26/483.70
  6. Step 6: Final answer
    x = 450.40

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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.