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Finding the Fourth Proportional to 573.28, 790.62 and 376.72

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Solution

The fourth proportional to 573.28, 790.62 and 376.72 is: 519.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.28 : 790.62 = 376.72 : x
  2. Step 2: Convert to fraction form
    573.28/790.62 = 376.72/x
  3. Step 3: Cross multiply
    573.28x = 790.62 × 376.72
  4. Step 4: Simplify right side
    573.28x = 297,842.37
  5. Step 5: Solve for x
    x = 297,842.37/573.28
  6. Step 6: Final answer
    x = 519.54

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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.