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Finding the Fourth Proportional to 483.30, 723.87 and 409.59

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Solution

The fourth proportional to 483.30, 723.87 and 409.59 is: 613.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.30 : 723.87 = 409.59 : x
  2. Step 2: Convert to fraction form
    483.30/723.87 = 409.59/x
  3. Step 3: Cross multiply
    483.30x = 723.87 × 409.59
  4. Step 4: Simplify right side
    483.30x = 296,489.91
  5. Step 5: Solve for x
    x = 296,489.91/483.30
  6. Step 6: Final answer
    x = 613.47

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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.