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Finding the Fourth Proportional to 613.62, 921.00 and 284.73

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Solution

The fourth proportional to 613.62, 921.00 and 284.73 is: 427.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.62 : 921.00 = 284.73 : x
  2. Step 2: Convert to fraction form
    613.62/921.00 = 284.73/x
  3. Step 3: Cross multiply
    613.62x = 921.00 × 284.73
  4. Step 4: Simplify right side
    613.62x = 262,236.72
  5. Step 5: Solve for x
    x = 262,236.72/613.62
  6. Step 6: Final answer
    x = 427.36

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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.