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Finding the Fourth Proportional to 440.91, 661.76 and 224.64

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Solution

The fourth proportional to 440.91, 661.76 and 224.64 is: 337.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.91 : 661.76 = 224.64 : x
  2. Step 2: Convert to fraction form
    440.91/661.76 = 224.64/x
  3. Step 3: Cross multiply
    440.91x = 661.76 × 224.64
  4. Step 4: Simplify right side
    440.91x = 148,656.64
  5. Step 5: Solve for x
    x = 148,656.64/440.91
  6. Step 6: Final answer
    x = 337.16

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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.