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Finding the Fourth Proportional to 439.30, 656.33 and 301.18

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Solution

The fourth proportional to 439.30, 656.33 and 301.18 is: 449.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.30 : 656.33 = 301.18 : x
  2. Step 2: Convert to fraction form
    439.30/656.33 = 301.18/x
  3. Step 3: Cross multiply
    439.30x = 656.33 × 301.18
  4. Step 4: Simplify right side
    439.30x = 197,673.47
  5. Step 5: Solve for x
    x = 197,673.47/439.30
  6. Step 6: Final answer
    x = 449.97

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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.