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Finding the Fourth Proportional to 576.19, 794.22 and 389.62

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Solution

The fourth proportional to 576.19, 794.22 and 389.62 is: 537.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.19 : 794.22 = 389.62 : x
  2. Step 2: Convert to fraction form
    576.19/794.22 = 389.62/x
  3. Step 3: Cross multiply
    576.19x = 794.22 × 389.62
  4. Step 4: Simplify right side
    576.19x = 309,444.00
  5. Step 5: Solve for x
    x = 309,444.00/576.19
  6. Step 6: Final answer
    x = 537.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.