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Finding the Fourth Proportional to 483.38, 724.83 and 209.35

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Solution

The fourth proportional to 483.38, 724.83 and 209.35 is: 313.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.38 : 724.83 = 209.35 : x
  2. Step 2: Convert to fraction form
    483.38/724.83 = 209.35/x
  3. Step 3: Cross multiply
    483.38x = 724.83 × 209.35
  4. Step 4: Simplify right side
    483.38x = 151,744.46
  5. Step 5: Solve for x
    x = 151,744.46/483.38
  6. Step 6: Final answer
    x = 313.92

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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.