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Finding the Fourth Proportional to 493.07, 680.41 and 283.22

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Solution

The fourth proportional to 493.07, 680.41 and 283.22 is: 390.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.07 : 680.41 = 283.22 : x
  2. Step 2: Convert to fraction form
    493.07/680.41 = 283.22/x
  3. Step 3: Cross multiply
    493.07x = 680.41 × 283.22
  4. Step 4: Simplify right side
    493.07x = 192,706.34
  5. Step 5: Solve for x
    x = 192,706.34/493.07
  6. Step 6: Final answer
    x = 390.83

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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.