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Finding the Fourth Proportional to 613.78, 847.14 and 365.08

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Solution

The fourth proportional to 613.78, 847.14 and 365.08 is: 503.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.78 : 847.14 = 365.08 : x
  2. Step 2: Convert to fraction form
    613.78/847.14 = 365.08/x
  3. Step 3: Cross multiply
    613.78x = 847.14 × 365.08
  4. Step 4: Simplify right side
    613.78x = 309,273.87
  5. Step 5: Solve for x
    x = 309,273.87/613.78
  6. Step 6: Final answer
    x = 503.88

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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.