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Finding the Fourth Proportional to 605.60, 835.69 and 381.47

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Solution

The fourth proportional to 605.60, 835.69 and 381.47 is: 526.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.60 : 835.69 = 381.47 : x
  2. Step 2: Convert to fraction form
    605.60/835.69 = 381.47/x
  3. Step 3: Cross multiply
    605.60x = 835.69 × 381.47
  4. Step 4: Simplify right side
    605.60x = 318,793.20
  5. Step 5: Solve for x
    x = 318,793.20/605.60
  6. Step 6: Final answer
    x = 526.41

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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.