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Finding the Fourth Proportional to 550.97, 825.68 and 434.90

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Solution

The fourth proportional to 550.97, 825.68 and 434.90 is: 651.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.97 : 825.68 = 434.90 : x
  2. Step 2: Convert to fraction form
    550.97/825.68 = 434.90/x
  3. Step 3: Cross multiply
    550.97x = 825.68 × 434.90
  4. Step 4: Simplify right side
    550.97x = 359,090.78
  5. Step 5: Solve for x
    x = 359,090.78/550.97
  6. Step 6: Final answer
    x = 651.74

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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.