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Finding the Fourth Proportional to 440.96, 608.30 and 283.56

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Solution

The fourth proportional to 440.96, 608.30 and 283.56 is: 391.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.96 : 608.30 = 283.56 : x
  2. Step 2: Convert to fraction form
    440.96/608.30 = 283.56/x
  3. Step 3: Cross multiply
    440.96x = 608.30 × 283.56
  4. Step 4: Simplify right side
    440.96x = 172,489.55
  5. Step 5: Solve for x
    x = 172,489.55/440.96
  6. Step 6: Final answer
    x = 391.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.