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Finding the Fourth Proportional to 440.36, 659.36 and 353.28

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Solution

The fourth proportional to 440.36, 659.36 and 353.28 is: 528.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.36 : 659.36 = 353.28 : x
  2. Step 2: Convert to fraction form
    440.36/659.36 = 353.28/x
  3. Step 3: Cross multiply
    440.36x = 659.36 × 353.28
  4. Step 4: Simplify right side
    440.36x = 232,938.70
  5. Step 5: Solve for x
    x = 232,938.70/440.36
  6. Step 6: Final answer
    x = 528.97

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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.