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Finding the Fourth Proportional to 576.99, 860.63 and 559.71

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Solution

The fourth proportional to 576.99, 860.63 and 559.71 is: 834.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.99 : 860.63 = 559.71 : x
  2. Step 2: Convert to fraction form
    576.99/860.63 = 559.71/x
  3. Step 3: Cross multiply
    576.99x = 860.63 × 559.71
  4. Step 4: Simplify right side
    576.99x = 481,700.42
  5. Step 5: Solve for x
    x = 481,700.42/576.99
  6. Step 6: Final answer
    x = 834.85

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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.