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Finding the Fourth Proportional to 1,800.95, 2,699.09 and 824.90

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Solution

The fourth proportional to 1,800.95, 2,699.09 and 824.90 is: 1,236.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,800.95 : 2,699.09 = 824.90 : x
  2. Step 2: Convert to fraction form
    1,800.95/2,699.09 = 824.90/x
  3. Step 3: Cross multiply
    1,800.95x = 2,699.09 × 824.90
  4. Step 4: Simplify right side
    1,800.95x = 2,226,475.22
  5. Step 5: Solve for x
    x = 2,226,475.22/1,800.95
  6. Step 6: Final answer
    x = 1,236.28

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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.