Home / 1,181.49-1,769.23-999.69

Finding the Fourth Proportional to 1,181.49, 1,769.23 and 999.69

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Solution

The fourth proportional to 1,181.49, 1,769.23 and 999.69 is: 1,496.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,181.49 : 1,769.23 = 999.69 : x
  2. Step 2: Convert to fraction form
    1,181.49/1,769.23 = 999.69/x
  3. Step 3: Cross multiply
    1,181.49x = 1,769.23 × 999.69
  4. Step 4: Simplify right side
    1,181.49x = 1,768,681.54
  5. Step 5: Solve for x
    x = 1,768,681.54/1,181.49
  6. Step 6: Final answer
    x = 1,496.99

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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.