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Finding the Fourth Proportional to 576.99, 859.83 and 561.15

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Solution

The fourth proportional to 576.99, 859.83 and 561.15 is: 836.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.99 : 859.83 = 561.15 : x
  2. Step 2: Convert to fraction form
    576.99/859.83 = 561.15/x
  3. Step 3: Cross multiply
    576.99x = 859.83 × 561.15
  4. Step 4: Simplify right side
    576.99x = 482,493.60
  5. Step 5: Solve for x
    x = 482,493.60/576.99
  6. Step 6: Final answer
    x = 836.23

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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.