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Finding the Fourth Proportional to 572.73, 790.38 and 351.55

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Solution

The fourth proportional to 572.73, 790.38 and 351.55 is: 485.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.73 : 790.38 = 351.55 : x
  2. Step 2: Convert to fraction form
    572.73/790.38 = 351.55/x
  3. Step 3: Cross multiply
    572.73x = 790.38 × 351.55
  4. Step 4: Simplify right side
    572.73x = 277,858.09
  5. Step 5: Solve for x
    x = 277,858.09/572.73
  6. Step 6: Final answer
    x = 485.15

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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.