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Finding the Fourth Proportional to 522.60, 720.68 and 443.92

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Solution

The fourth proportional to 522.60, 720.68 and 443.92 is: 612.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.60 : 720.68 = 443.92 : x
  2. Step 2: Convert to fraction form
    522.60/720.68 = 443.92/x
  3. Step 3: Cross multiply
    522.60x = 720.68 × 443.92
  4. Step 4: Simplify right side
    522.60x = 319,924.27
  5. Step 5: Solve for x
    x = 319,924.27/522.60
  6. Step 6: Final answer
    x = 612.18

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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.