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Finding the Fourth Proportional to 576.30, 794.88 and 389.50

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Solution

The fourth proportional to 576.30, 794.88 and 389.50 is: 537.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.30 : 794.88 = 389.50 : x
  2. Step 2: Convert to fraction form
    576.30/794.88 = 389.50/x
  3. Step 3: Cross multiply
    576.30x = 794.88 × 389.50
  4. Step 4: Simplify right side
    576.30x = 309,605.76
  5. Step 5: Solve for x
    x = 309,605.76/576.30
  6. Step 6: Final answer
    x = 537.23

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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.