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Finding the Fourth Proportional to 576.11, 859.28 and 558.80

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Solution

The fourth proportional to 576.11, 859.28 and 558.80 is: 833.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.11 : 859.28 = 558.80 : x
  2. Step 2: Convert to fraction form
    576.11/859.28 = 558.80/x
  3. Step 3: Cross multiply
    576.11x = 859.28 × 558.80
  4. Step 4: Simplify right side
    576.11x = 480,158.57
  5. Step 5: Solve for x
    x = 480,158.57/576.11
  6. Step 6: Final answer
    x = 833.46

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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.