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Finding the Fourth Proportional to 579.15, 798.66 and 454.41

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Solution

The fourth proportional to 579.15, 798.66 and 454.41 is: 626.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.15 : 798.66 = 454.41 : x
  2. Step 2: Convert to fraction form
    579.15/798.66 = 454.41/x
  3. Step 3: Cross multiply
    579.15x = 798.66 × 454.41
  4. Step 4: Simplify right side
    579.15x = 362,919.09
  5. Step 5: Solve for x
    x = 362,919.09/579.15
  6. Step 6: Final answer
    x = 626.64

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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.