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Finding the Fourth Proportional to 483.91, 723.10 and 328.54

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Solution

The fourth proportional to 483.91, 723.10 and 328.54 is: 490.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.91 : 723.10 = 328.54 : x
  2. Step 2: Convert to fraction form
    483.91/723.10 = 328.54/x
  3. Step 3: Cross multiply
    483.91x = 723.10 × 328.54
  4. Step 4: Simplify right side
    483.91x = 237,567.27
  5. Step 5: Solve for x
    x = 237,567.27/483.91
  6. Step 6: Final answer
    x = 490.93

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.