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Finding the Fourth Proportional to 1,179.59, 1,767.96 and 832.40

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Solution

The fourth proportional to 1,179.59, 1,767.96 and 832.40 is: 1,247.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179.59 : 1,767.96 = 832.40 : x
  2. Step 2: Convert to fraction form
    1,179.59/1,767.96 = 832.40/x
  3. Step 3: Cross multiply
    1,179.59x = 1,767.96 × 832.40
  4. Step 4: Simplify right side
    1,179.59x = 1,471,647.69
  5. Step 5: Solve for x
    x = 1,471,647.69/1,179.59
  6. Step 6: Final answer
    x = 1,247.60

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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.