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Finding the Fourth Proportional to 440.54, 608.00 and 353.46

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Solution

The fourth proportional to 440.54, 608.00 and 353.46 is: 487.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.54 : 608.00 = 353.46 : x
  2. Step 2: Convert to fraction form
    440.54/608.00 = 353.46/x
  3. Step 3: Cross multiply
    440.54x = 608.00 × 353.46
  4. Step 4: Simplify right side
    440.54x = 214,901.91
  5. Step 5: Solve for x
    x = 214,901.91/440.54
  6. Step 6: Final answer
    x = 487.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.