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Finding the Fourth Proportional to 613.60, 920.39 and 248.29

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Solution

The fourth proportional to 613.60, 920.39 and 248.29 is: 372.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.60 : 920.39 = 248.29 : x
  2. Step 2: Convert to fraction form
    613.60/920.39 = 248.29/x
  3. Step 3: Cross multiply
    613.60x = 920.39 × 248.29
  4. Step 4: Simplify right side
    613.60x = 228,523.63
  5. Step 5: Solve for x
    x = 228,523.63/613.60
  6. Step 6: Final answer
    x = 372.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.