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Finding the Fourth Proportional to 439.17, 657.56 and 300.06

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Solution

The fourth proportional to 439.17, 657.56 and 300.06 is: 449.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.17 : 657.56 = 300.06 : x
  2. Step 2: Convert to fraction form
    439.17/657.56 = 300.06/x
  3. Step 3: Cross multiply
    439.17x = 657.56 × 300.06
  4. Step 4: Simplify right side
    439.17x = 197,305.95
  5. Step 5: Solve for x
    x = 197,305.95/439.17
  6. Step 6: Final answer
    x = 449.27

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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.