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Finding the Fourth Proportional to 713.37, 984.21 and 418.62

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Solution

The fourth proportional to 713.37, 984.21 and 418.62 is: 577.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    713.37 : 984.21 = 418.62 : x
  2. Step 2: Convert to fraction form
    713.37/984.21 = 418.62/x
  3. Step 3: Cross multiply
    713.37x = 984.21 × 418.62
  4. Step 4: Simplify right side
    713.37x = 412,009.99
  5. Step 5: Solve for x
    x = 412,009.99/713.37
  6. Step 6: Final answer
    x = 577.55

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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.