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Finding the Fourth Proportional to 573.18, 790.72 and 363.21

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Solution

The fourth proportional to 573.18, 790.72 and 363.21 is: 501.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.18 : 790.72 = 363.21 : x
  2. Step 2: Convert to fraction form
    573.18/790.72 = 363.21/x
  3. Step 3: Cross multiply
    573.18x = 790.72 × 363.21
  4. Step 4: Simplify right side
    573.18x = 287,197.41
  5. Step 5: Solve for x
    x = 287,197.41/573.18
  6. Step 6: Final answer
    x = 501.06

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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.