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Finding the Fourth Proportional to 522.73, 783.93 and 279.12

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Solution

The fourth proportional to 522.73, 783.93 and 279.12 is: 418.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.73 : 783.93 = 279.12 : x
  2. Step 2: Convert to fraction form
    522.73/783.93 = 279.12/x
  3. Step 3: Cross multiply
    522.73x = 783.93 × 279.12
  4. Step 4: Simplify right side
    522.73x = 218,810.54
  5. Step 5: Solve for x
    x = 218,810.54/522.73
  6. Step 6: Final answer
    x = 418.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.