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Finding the Fourth Proportional to 579.01, 798.61 and 354.95

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Solution

The fourth proportional to 579.01, 798.61 and 354.95 is: 489.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.01 : 798.61 = 354.95 : x
  2. Step 2: Convert to fraction form
    579.01/798.61 = 354.95/x
  3. Step 3: Cross multiply
    579.01x = 798.61 × 354.95
  4. Step 4: Simplify right side
    579.01x = 283,466.62
  5. Step 5: Solve for x
    x = 283,466.62/579.01
  6. Step 6: Final answer
    x = 489.57

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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.