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Finding the Fourth Proportional to 522.22, 720.35 and 323.13

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Solution

The fourth proportional to 522.22, 720.35 and 323.13 is: 445.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.22 : 720.35 = 323.13 : x
  2. Step 2: Convert to fraction form
    522.22/720.35 = 323.13/x
  3. Step 3: Cross multiply
    522.22x = 720.35 × 323.13
  4. Step 4: Simplify right side
    522.22x = 232,764.80
  5. Step 5: Solve for x
    x = 232,764.80/522.22
  6. Step 6: Final answer
    x = 445.72

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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.