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Finding the Fourth Proportional to 2,192.85, 3,289.15 and 549.30

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Solution

The fourth proportional to 2,192.85, 3,289.15 and 549.30 is: 823.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,192.85 : 3,289.15 = 549.30 : x
  2. Step 2: Convert to fraction form
    2,192.85/3,289.15 = 549.30/x
  3. Step 3: Cross multiply
    2,192.85x = 3,289.15 × 549.30
  4. Step 4: Simplify right side
    2,192.85x = 1,806,730.10
  5. Step 5: Solve for x
    x = 1,806,730.10/2,192.85
  6. Step 6: Final answer
    x = 823.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.