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Finding the Fourth Proportional to 880.49, 1,317.45 and 674.75

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Solution

The fourth proportional to 880.49, 1,317.45 and 674.75 is: 1,009.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    880.49 : 1,317.45 = 674.75 : x
  2. Step 2: Convert to fraction form
    880.49/1,317.45 = 674.75/x
  3. Step 3: Cross multiply
    880.49x = 1,317.45 × 674.75
  4. Step 4: Simplify right side
    880.49x = 888,949.39
  5. Step 5: Solve for x
    x = 888,949.39/880.49
  6. Step 6: Final answer
    x = 1,009.61

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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.