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Finding the Fourth Proportional to 569.25, 786.92 and 518.02

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Solution

The fourth proportional to 569.25, 786.92 and 518.02 is: 716.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.25 : 786.92 = 518.02 : x
  2. Step 2: Convert to fraction form
    569.25/786.92 = 518.02/x
  3. Step 3: Cross multiply
    569.25x = 786.92 × 518.02
  4. Step 4: Simplify right side
    569.25x = 407,635.74
  5. Step 5: Solve for x
    x = 407,635.74/569.25
  6. Step 6: Final answer
    x = 716.09

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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.