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Finding the Fourth Proportional to 440.92, 664.62 and 403.94

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Solution

The fourth proportional to 440.92, 664.62 and 403.94 is: 608.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.92 : 664.62 = 403.94 : x
  2. Step 2: Convert to fraction form
    440.92/664.62 = 403.94/x
  3. Step 3: Cross multiply
    440.92x = 664.62 × 403.94
  4. Step 4: Simplify right side
    440.92x = 268,468.26
  5. Step 5: Solve for x
    x = 268,468.26/440.92
  6. Step 6: Final answer
    x = 608.89

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.