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Finding the Fourth Proportional to 572.98, 790.65 and 324.25

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Solution

The fourth proportional to 572.98, 790.65 and 324.25 is: 447.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.98 : 790.65 = 324.25 : x
  2. Step 2: Convert to fraction form
    572.98/790.65 = 324.25/x
  3. Step 3: Cross multiply
    572.98x = 790.65 × 324.25
  4. Step 4: Simplify right side
    572.98x = 256,367.55
  5. Step 5: Solve for x
    x = 256,367.55/572.98
  6. Step 6: Final answer
    x = 447.43

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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.