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Finding the Fourth Proportional to 579.06, 798.29 and 490.19

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Solution

The fourth proportional to 579.06, 798.29 and 490.19 is: 675.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.06 : 798.29 = 490.19 : x
  2. Step 2: Convert to fraction form
    579.06/798.29 = 490.19/x
  3. Step 3: Cross multiply
    579.06x = 798.29 × 490.19
  4. Step 4: Simplify right side
    579.06x = 391,309.17
  5. Step 5: Solve for x
    x = 391,309.17/579.06
  6. Step 6: Final answer
    x = 675.77

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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.