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Finding the Fourth Proportional to 522.65, 720.61 and 325.82

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Solution

The fourth proportional to 522.65, 720.61 and 325.82 is: 449.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.65 : 720.61 = 325.82 : x
  2. Step 2: Convert to fraction form
    522.65/720.61 = 325.82/x
  3. Step 3: Cross multiply
    522.65x = 720.61 × 325.82
  4. Step 4: Simplify right side
    522.65x = 234,789.15
  5. Step 5: Solve for x
    x = 234,789.15/522.65
  6. Step 6: Final answer
    x = 449.23

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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.