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Finding the Fourth Proportional to 440.70, 661.32 and 333.42

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Solution

The fourth proportional to 440.70, 661.32 and 333.42 is: 500.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.70 : 661.32 = 333.42 : x
  2. Step 2: Convert to fraction form
    440.70/661.32 = 333.42/x
  3. Step 3: Cross multiply
    440.70x = 661.32 × 333.42
  4. Step 4: Simplify right side
    440.70x = 220,497.31
  5. Step 5: Solve for x
    x = 220,497.31/440.70
  6. Step 6: Final answer
    x = 500.33

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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.