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Finding the Fourth Proportional to 1,104.96, 1,524.24 and 772.80

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Solution

The fourth proportional to 1,104.96, 1,524.24 and 772.80 is: 1,066.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,104.96 : 1,524.24 = 772.80 : x
  2. Step 2: Convert to fraction form
    1,104.96/1,524.24 = 772.80/x
  3. Step 3: Cross multiply
    1,104.96x = 1,524.24 × 772.80
  4. Step 4: Simplify right side
    1,104.96x = 1,177,932.67
  5. Step 5: Solve for x
    x = 1,177,932.67/1,104.96
  6. Step 6: Final answer
    x = 1,066.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.