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Finding the Fourth Proportional to 605.64, 836.43 and 458.64

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Solution

The fourth proportional to 605.64, 836.43 and 458.64 is: 633.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.64 : 836.43 = 458.64 : x
  2. Step 2: Convert to fraction form
    605.64/836.43 = 458.64/x
  3. Step 3: Cross multiply
    605.64x = 836.43 × 458.64
  4. Step 4: Simplify right side
    605.64x = 383,620.26
  5. Step 5: Solve for x
    x = 383,620.26/605.64
  6. Step 6: Final answer
    x = 633.41

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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.