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Finding the Fourth Proportional to 589.52, 879.22 and 579.80

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Solution

The fourth proportional to 589.52, 879.22 and 579.80 is: 864.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.52 : 879.22 = 579.80 : x
  2. Step 2: Convert to fraction form
    589.52/879.22 = 579.80/x
  3. Step 3: Cross multiply
    589.52x = 879.22 × 579.80
  4. Step 4: Simplify right side
    589.52x = 509,771.76
  5. Step 5: Solve for x
    x = 509,771.76/589.52
  6. Step 6: Final answer
    x = 864.72

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.