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Finding the Fourth Proportional to 612.41, 849.11 and 579.60

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Solution

The fourth proportional to 612.41, 849.11 and 579.60 is: 803.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.41 : 849.11 = 579.60 : x
  2. Step 2: Convert to fraction form
    612.41/849.11 = 579.60/x
  3. Step 3: Cross multiply
    612.41x = 849.11 × 579.60
  4. Step 4: Simplify right side
    612.41x = 492,141.26
  5. Step 5: Solve for x
    x = 492,141.26/612.41
  6. Step 6: Final answer
    x = 803.62

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.