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Finding the Fourth Proportional to 579.28, 872.05 and 529.06

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Solution

The fourth proportional to 579.28, 872.05 and 529.06 is: 796.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.28 : 872.05 = 529.06 : x
  2. Step 2: Convert to fraction form
    579.28/872.05 = 529.06/x
  3. Step 3: Cross multiply
    579.28x = 872.05 × 529.06
  4. Step 4: Simplify right side
    579.28x = 461,366.77
  5. Step 5: Solve for x
    x = 461,366.77/579.28
  6. Step 6: Final answer
    x = 796.45

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.