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Finding the Fourth Proportional to 605.38, 835.38 and 384.25

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Solution

The fourth proportional to 605.38, 835.38 and 384.25 is: 530.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.38 : 835.38 = 384.25 : x
  2. Step 2: Convert to fraction form
    605.38/835.38 = 384.25/x
  3. Step 3: Cross multiply
    605.38x = 835.38 × 384.25
  4. Step 4: Simplify right side
    605.38x = 320,992.84
  5. Step 5: Solve for x
    x = 320,992.84/605.38
  6. Step 6: Final answer
    x = 530.23

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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.