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Finding the Fourth Proportional to 613.97, 847.21 and 365.30

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Solution

The fourth proportional to 613.97, 847.21 and 365.30 is: 504.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.97 : 847.21 = 365.30 : x
  2. Step 2: Convert to fraction form
    613.97/847.21 = 365.30/x
  3. Step 3: Cross multiply
    613.97x = 847.21 × 365.30
  4. Step 4: Simplify right side
    613.97x = 309,483.99
  5. Step 5: Solve for x
    x = 309,483.99/613.97
  6. Step 6: Final answer
    x = 504.07

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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.