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Finding the Fourth Proportional to 440.70, 661.50 and 224.28

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Solution

The fourth proportional to 440.70, 661.50 and 224.28 is: 336.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.70 : 661.50 = 224.28 : x
  2. Step 2: Convert to fraction form
    440.70/661.50 = 224.28/x
  3. Step 3: Cross multiply
    440.70x = 661.50 × 224.28
  4. Step 4: Simplify right side
    440.70x = 148,361.22
  5. Step 5: Solve for x
    x = 148,361.22/440.70
  6. Step 6: Final answer
    x = 336.65

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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.