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Finding the Fourth Proportional to 523.00, 784.19 and 279.39

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Solution

The fourth proportional to 523.00, 784.19 and 279.39 is: 418.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    523.00 : 784.19 = 279.39 : x
  2. Step 2: Convert to fraction form
    523.00/784.19 = 279.39/x
  3. Step 3: Cross multiply
    523.00x = 784.19 × 279.39
  4. Step 4: Simplify right side
    523.00x = 219,094.28
  5. Step 5: Solve for x
    x = 219,094.28/523.00
  6. Step 6: Final answer
    x = 418.92

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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.