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Finding the Fourth Proportional to 579.56, 797.72 and 501.80

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Solution

The fourth proportional to 579.56, 797.72 and 501.80 is: 690.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.56 : 797.72 = 501.80 : x
  2. Step 2: Convert to fraction form
    579.56/797.72 = 501.80/x
  3. Step 3: Cross multiply
    579.56x = 797.72 × 501.80
  4. Step 4: Simplify right side
    579.56x = 400,289.40
  5. Step 5: Solve for x
    x = 400,289.40/579.56
  6. Step 6: Final answer
    x = 690.68

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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.