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Finding the Fourth Proportional to 579.03, 798.28 and 500.05

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Solution

The fourth proportional to 579.03, 798.28 and 500.05 is: 689.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.03 : 798.28 = 500.05 : x
  2. Step 2: Convert to fraction form
    579.03/798.28 = 500.05/x
  3. Step 3: Cross multiply
    579.03x = 798.28 × 500.05
  4. Step 4: Simplify right side
    579.03x = 399,179.91
  5. Step 5: Solve for x
    x = 399,179.91/579.03
  6. Step 6: Final answer
    x = 689.39

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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.