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Finding the Fourth Proportional to 583.45, 805.09 and 334.78

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Solution

The fourth proportional to 583.45, 805.09 and 334.78 is: 461.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.45 : 805.09 = 334.78 : x
  2. Step 2: Convert to fraction form
    583.45/805.09 = 334.78/x
  3. Step 3: Cross multiply
    583.45x = 805.09 × 334.78
  4. Step 4: Simplify right side
    583.45x = 269,528.03
  5. Step 5: Solve for x
    x = 269,528.03/583.45
  6. Step 6: Final answer
    x = 461.96

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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.