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Finding the Fourth Proportional to 572.78, 790.82 and 376.62

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Solution

The fourth proportional to 572.78, 790.82 and 376.62 is: 519.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.78 : 790.82 = 376.62 : x
  2. Step 2: Convert to fraction form
    572.78/790.82 = 376.62/x
  3. Step 3: Cross multiply
    572.78x = 790.82 × 376.62
  4. Step 4: Simplify right side
    572.78x = 297,836.75
  5. Step 5: Solve for x
    x = 297,836.75/572.78
  6. Step 6: Final answer
    x = 519.99

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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.