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Finding the Fourth Proportional to 1,177.68, 1,763.16 and 792.24

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Solution

The fourth proportional to 1,177.68, 1,763.16 and 792.24 is: 1,186.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.68 : 1,763.16 = 792.24 : x
  2. Step 2: Convert to fraction form
    1,177.68/1,763.16 = 792.24/x
  3. Step 3: Cross multiply
    1,177.68x = 1,763.16 × 792.24
  4. Step 4: Simplify right side
    1,177.68x = 1,396,845.88
  5. Step 5: Solve for x
    x = 1,396,845.88/1,177.68
  6. Step 6: Final answer
    x = 1,186.10

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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.