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Finding the Fourth Proportional to 1,181.79, 1,769.59 and 833.24

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Solution

The fourth proportional to 1,181.79, 1,769.59 and 833.24 is: 1,247.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,181.79 : 1,769.59 = 833.24 : x
  2. Step 2: Convert to fraction form
    1,181.79/1,769.59 = 833.24/x
  3. Step 3: Cross multiply
    1,181.79x = 1,769.59 × 833.24
  4. Step 4: Simplify right side
    1,181.79x = 1,474,492.00
  5. Step 5: Solve for x
    x = 1,474,492.00/1,181.79
  6. Step 6: Final answer
    x = 1,247.67

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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.