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Finding the Fourth Proportional to 583.20, 799.59 and 572.79

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Solution

The fourth proportional to 583.20, 799.59 and 572.79 is: 785.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    583.20 : 799.59 = 572.79 : x
  2. Step 2: Convert to fraction form
    583.20/799.59 = 572.79/x
  3. Step 3: Cross multiply
    583.20x = 799.59 × 572.79
  4. Step 4: Simplify right side
    583.20x = 457,997.16
  5. Step 5: Solve for x
    x = 457,997.16/583.20
  6. Step 6: Final answer
    x = 785.32

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.