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Finding the Fourth Proportional to 573.03, 790.83 and 479.61

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Solution

The fourth proportional to 573.03, 790.83 and 479.61 is: 661.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.03 : 790.83 = 479.61 : x
  2. Step 2: Convert to fraction form
    573.03/790.83 = 479.61/x
  3. Step 3: Cross multiply
    573.03x = 790.83 × 479.61
  4. Step 4: Simplify right side
    573.03x = 379,289.98
  5. Step 5: Solve for x
    x = 379,289.98/573.03
  6. Step 6: Final answer
    x = 661.90

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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.