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Finding the Fourth Proportional to 557.27, 834.62 and 440.95

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Solution

The fourth proportional to 557.27, 834.62 and 440.95 is: 660.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.27 : 834.62 = 440.95 : x
  2. Step 2: Convert to fraction form
    557.27/834.62 = 440.95/x
  3. Step 3: Cross multiply
    557.27x = 834.62 × 440.95
  4. Step 4: Simplify right side
    557.27x = 368,021.40
  5. Step 5: Solve for x
    x = 368,021.40/557.27
  6. Step 6: Final answer
    x = 660.40

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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.